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Besides these extraordinary expenditures, the withdrawals of
applications have been unusually large, exceeding the
amount of those of last year-which was greater than any
preceding year-the sum of.....

$2,601 01

9,679 50

This sum of $9,679 50 deducted from the whole expenditure,
$86,916 93, and the ordinary expenses of the office for the year 1851 is
shown to be only $77,237 43-$2,863 52 less as compared with the
expenses of last year.

C.

Statement of receipts and expenditures of the Patent Office for the
year 1851.

Amount received from all sources.

Amount of expenditures of all kinds..

$95,738 61
86,916 93

Amount carried to credit of Patent fund for 1851...... 8,821 68

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Amount remaining in the treasury to the credit of the
Patent fund January 1, 1852...

24,152 95

E.

Statement of applications on hand January 1, 1851, and number received

during the year and acted upon.

Number of cases on examiners' desks January 1, 1851....
Number of applications received in 1851

Number of cases before the office during the year

Number of patents issued during the year...

Number of applications remaining unexamined.

Number of rejections and suspensions.

169

.2,258

.2,427

869

155

.1,403

- 2,427

Months.

F.

Statement showing amount of fees received and number of application. and caveats filed during each month of the year 1851.

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Table exhibiting the business of the office for the last eleven years, and the necessity of an increase of permanent clerical force.

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The foregoing statistics exhibit a very large increase of business in this office for the last eleven years; and by reference to the table it will be seen that the increase for 1851 is in full proportion with former years. This accumulation of business has been provided for from time to time by Congress, in authorizing necessary additions to the examining force. This force for the present is deemed sufficient. But there are still departinents.of the business and labor of the office which have increased in a corresponding ratio with the examinations, and no provision made by Congress to relieve them. Hence the suggestions in relation to an increase of clerical force, in the preceding pages.

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Table showing the number of patents, reissues, designs, and additional improvements granted at the Patent Office in Washington during each month of the year 1851.

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Table showing the number of patents issued to citizens of different States during the year 1851.

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Patents, reissues, designs and additional improvements are all included in this table.

3082414

Arkansas...

Florida..

Tennessee....

4

Texas

Kentucky

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Ohio.....

76

.....

Michigan..
Indiana..
Illinois.....
Missouri

13

Foreign

10

......

Total..

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805308

Iowa

....

Wisconsin

District of Columbia

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IV.

CLASSIFIED LIST OF PATENTS THAT HAVE EXPIRED IN THE YEAR 1951.

CLASS L-Agriculture, indufing instruments and operations.

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CLASS II.-Metallurgy and manufacture of metals.

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IV.-Classified list of patents, &c.—Continued.

Inventions or discoveries.

Patentees.

Residence.

Date of patent.

1837.

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....

Albany, N. Y.....

July 29

Towanda, Pa.....

Feb. 16

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Asa Whitney...
Joseph Lyon...
Frederick Fredly.
Lemuel Hedge...
David Holtman....
Enoch Robinson & G.
W. Robinson.
Charles S. Gay....
David N. Ropes...
Turner Whitehouse
James McClony...
Henry C. Jones..
William Hobbs.
Joseph Berry & Oliver
P. Rand.

N. W. Bishop & Sim-
eon Brooks.
Levi Severance..
Joseph Blackall
Palmer Williams....
Jacob Sloat & Thomas
Springstead.

Thomas W. Harvey...
Clement O. Reed.....
Barzillai Young & Sam.
Titus.
Linus Dean........
Elijah Jaquith
Philip F. Hazard.....
Henry Hammond..
Thomas W. Harvey...

CLASS III.-Manufactures of fibrous and textile substances, including machines for preparing fibres of wool, cotton, silk, fur, paper, &c.

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