either by fixing thereon the word " patented," together with the day and year the patent was granted; or when, from the character of the article patented, that may be impracticable, by enveloping one or more of the said articles, and affixing a label to the package, or otherwise attaching thereto a label on which the notice, with the date, is printed; on failure of which, in any suit for the infringement of letters-patent by the party failing so to mark the article the right to which is infringed upon, no damage shall be recovered by the plaintiff, except on proof that the defendant was duly notified of the infringement, and continued after such notice to make or vend the article patented. And the sixth section of the act entitled "An Act in addition to an Act to promote the progress of the useful arts," and so forth, approved the twenty-ninth day of August, eighteen hundred and forty-two, be, and the same is hereby, repealed. SECTION 14. [See act of 1862, ch. 182.] And be it further enacted, That the Commissioner of Patents be, and he is hereby, authorized to print, or in his discretion to cause to be printed, ten copies of the description and claims of all patents which may hereafter be granted, and ten copies of the drawings of the same, when drawings shall accompany the patents: Provided, The cost of printing the text of said descriptions and claims shall not exceed, exclusive of stationery, the sum of two cents per hundred words for each of said copies, and the cost of the drawing shall not exceed fifty cents per copy; one copy of the above number shall be printed on parchment to be affixed to the letters-patent; the work shall be under the direction, and subject to the approval, of the Commissioner of Patents, and the expense of the said copies shall be paid for out of the patent fund. SECTION 15. And be it further enacted, That printed copies of the letterspatent of the United States, with the seal of the Patent Office affixed thereto and certified and signed by the Commissioner of Patents, shall be legal evidence of the contents of said letters-patent in all cases. SECTION 16. [See act of 1836, ch. 357, §§ 5, 18.] And be it further enacted, That all patents hereafter granted shall remain in force for the term of seventeen years from the date of issue; and all extension of such patents is hereby prohibited. SECTION 17. And be it further enacted, That all acts and parts of acts heretofore passed, which are inconsistent with the provisions of this act, be, and the same are hereby, repealed. Approved March 2, 1861. ACT OF 1862, CHAPTER 182. 12 STATUTES AT LARGE, 583. An Act making supplemental appropriations for sundry civil expenses, &c. SECTION 4. [See act of 1861, ch. 88, § 14.] For the fund of the Patent Office, fifty thousand eight hundred and fifty-five dollars and forty-nine cents, to supply a deficiency existing under the act of March second, eighteen hundred and sixty-one, entitled "An Act in addition to an Act to promote the progress of the useful arts": Provided, That the fourteenth section of said act be, and the same is hereby, repealed. Approved July 16, 1862. ACT OF 1863, CHAPTER 102. 12 STATUTES AT LARGE, 796. An Act to amend an Act entitled "An Act to promote the progress of the useful arts." SECTION 1. [See act of 1836, ch. 357, § 7.] Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That so much of section seven of the act entitled "An Act to promote the progress of the useful arts," approved July fourth, eighteen hundred and thirty-six, as requires a renewal of the oath, be, and the same is hereby, repealed. SECTION 2. And be it further enacted, That, whereas the falling off of the revenue of the Patent Office required a reduction of the compensation of the examiners and clerks, or other employees in the office, after the thirty-first day of August, eighteen hundred and sixty-one, that the Commissioner of Patents be, and he is hereby, authorized, whenever the revenue of the office will justify him in so doing, to pay them such sums, in addition to what they shall already have received, as will make their compensation the same as it was at that time. SECTION 3. [See act of 1864, ch. 159.] And be it further enacted, That every patent shall be dated as of a day not later than six months after the time at which it was passed and allowed, and notice thereof sent to the applicant or his agent. And if the final fee for such patent be not paid within the said six months, the patent shall be withheld, and the invention therein described shall become public property as against the applicant therefor: Provided, That in all cases where patents have een allowed previous to the passage of this act, the said six months shall be reckoned from the date of such passage. Approved March 3, 1863. ACT OF 1864, CHAPTER 159. 13 STATUTES AT LARGE, 194. An Act amendatory of "An Act to amend an Act entitled An Act to promote the progress of the useful arts," approved March three, eighteen hundred and sixty-three. [See act of 1863, ch. 102, § 3.] Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That any person having an interest in an invention, whether as the inventor or assignee, for which a patent was ordered to issue upon the payment of the final fee, as provided in section three of an act approved March three, eighteen hundred and sixty-three, but who has failed to make payment of the final fee, as provided by said act, shall have the right to make the payment of such fee, and receive the patent withheld on account of the non-payment of said fee, provided such payment be made within six months from the date of the passage of this act: Provided, That nothing herein shall be so construed as to hold responsible in damages any persons who have manufactured or used any article or thing for which a patent, as aforesaid, was ordered to be issued. Approved June 25, 1864. ACT OF 1865, CHAPTER 112. 13 STATUTES AT LARGE, 533. An Act amendatory of "An Act to amend an Act entitled An Act to promote the progress of the useful arts," approved March three, eighteen hundred and sixty three. [See act of 1863, ch. 102, § 3.] Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That any person having an interest in an invention, whether as inventor or assignee, for which a patent was ordered to issue upon the payment of the final fee, as provided in section three of an act approved March three, eighteen hundred and sixty-three, but who has failed to make payment of the final fee, as provided in said act, shall have the right to make an application for a patent for his invention, the same as in the case of an original application, provided such application be made within two years after the date of the allowance of the original application: Provided, That nothing herein shall be so construed as to hold responsible in damages any persons who have manufactured or used any article or thing for which a patent aforesaid was ordered to issue. This act shall apply to all cases now in the Patent Office, and also to such as shall hereafter be filed. parts of acts inconsistent with this act are hereby repealed. Approved March 3, 1865. And all acts or |