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patent office, setting forth the grounds thereof; and the commissioner shall, on the applicant's paying the sum of forty dollars to the credit of the treasury, as in the case of an original application for a patent, cause to be published in one or more of the principal newspapers in the city of Washington, and in such other paper or papers as he may deem proper, published in the section of country most interested adversely to the extension of the patent, a notice of such application and of the time and place when and where the same will be considered, that any person may appear and show cause why the extension should not be granted. And the secretary of state, the commissioner of the patent office, and the solicitor of the treasury, shall constitute a board to hear and decide upon the evidence produced before them both for and against the extension, and shall sit for that purpose at the time and place designated in the published notice thereof. The patentee shall furnish to said board a statement, in writing, under oath, of the ascertained value of the invention, and of his receipts and expenditures, sufficiently in detail to exhibit a true and faithful account of loss and profit in any manner accruing to him from and by reason of said invention. And if, upon a hearing of the matter, it shall appear to the full and entire satisfaction of said board, having due regard to the public interest therein, that it is just and proper that the term of the patent should be extended, by reason of the patentee, without neglect or fault on his part, having failed to obtain from the use and sale of his invention, a reasonable remuneration for the time, ingenuity, and expense bestowed upon the same, and the introduction thereof into use, it shall be the duty of the commissioner to renew and extend the patent, by making a certificate thereon of such extension, for the term of seven years from and after the expiration of the first term; which certificate, with a certificate

of said board of their judgment and opinion as aforesaid, shall be entered on record in the patent office; and thereupon the said patent shall have the same effect in law as though it had been orignally granted for the term of twenty-one years. And the benefit of such renewal shall extend to assignees and grantees of the right to use the thing patented, to the extent of their respective interest therein: Provided, however, That no extension of a patent shall be granted after the expiration of the term for which it was originally issued.

19. That there shall be provided for the use of said office, a library of scientific works and periodical publications, both foreign and American, calculated to facilitate the discharge of the duties hereby required of the chief officers therein, to be purchased under the direction of the committee of the library of congress. And the sum of fifteen hundred dollars is hereby appropriated, for that purpose, to be paid out of the patent fund.

20. That it shall be the duty of the commissioner to cause to be classified and arranged, in such rooms or galleries as may be provided for that purpose, in suitable cases, when necessary for their preservation, and in such manner as shall be conducive to a beneficial and favorable display thereof, the models and specimens of compositions, and of fabrics and other manufactures and works of art, patented or unpatented, which have been, or shall hereafter be deposited in said office. And said rooms or galleries shall be kept open during suitable hours for public inspection.

$21. That all acts and parts of acts heretofore passed on this subject be, and the same are hereby repealed Provided, however, That all actions and processes in law or equity, sued out prior to the passage of this act, may be prosecuted to final judgment and execution, in the same manner as though this act

had not been passed, excepting and saving the application to any such action, of the provisions of the fourteenth and fifteenth sections of this act, so far as they may be applicable thereto. And provided, also, that all applications or petitions for patents pending at the time of the passage of this act, in cases where the duty has been paid, shall be proceeded with and acted on in the same manner as though filed after the passage hereof.

SPECIFICATION.

To all

persons

whom it

may concern.

Be it known that I, the undersigned, S. C., of V., in the county of H., in the State of M., have invented [or discovered], a new and useful machine [invention or improvement, or composition of matter,] called [here give the title of the invention] of which the following is a full and exact description:

[Description of the invention.]

In testimony whereof, I the said S. C. hereto subscribe my name in the presence of the witnesses whose names are hereto subscribed, on the

of

A. D. 18

Signed in our presence,

A. B.
C. D.

S. C.

day

ATTESTATION TO THE DRAWINGS.

The above is the drawing of [description of the invention] referred to in my specification, of the said improvement [machine or invention] dated at V. on

the

day of

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In testimony whereof, I hereto subscribe my name on said day and year

Signed in presence of

A. B.

C. D.

S. C.

FORM OF THE OATH.

State of M., County of H., ss.

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On the day of A. D. 18 before the subscriber, a justice of the peace in and for said county, and authorized by law to administer oaths, personally appeared S. C. and made oath [or affirmation] that he verily believes that he is the first and original inventor of the [improvement, machine, or composition of matter, &c.] above mentioned and described in the specification by him subscribed, and that he does not know or believe that the same was ever before known or used, and that he is a citizen of the United States.1

FORM OF THE PETITION.

To the Honorable Henry L. Ellsworth, Commissioner of Patents of the United States.

The petition of S. C., of V., in the County of H., and State of M., engineer, respectfully represents,

That your petitioner has invented a new and useful [machine, improvement, composition of matter,] which he verily believes was not known or used prior to his invention thereof; which has not heretofore been and is not now in public use or on sale with his consent or allowance as inventor thereof, an exclusive property wherein he is desirous of securing to himself and his legal representatives. He therefore prays that letters

If he is an alien resident in the United States, who has made his declaration, &c. it should be so stated; or if an alien not domiciled in the United States, the country of which he is a subject should be stated.

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