« iepriekšējāTurpināt »
1. THE PATENT OFFICE-ITS ADMINISTRATION, &c.
II. FINANCES AND STATISTICS.
VII. INVENTIONS AND CLAIMS.
VIII. EARLY AMERICAN INVENTIONS.
X. THE WORLD'S EXPOSITION OF 1851.
XI. INFORMATION TO APPLICANTS FOR PATENTS.
ROBBRT ARMSTRONG, PRINTER.
Table showing the number of Patents, Re-issues, Designs, and Improvements granted in
Table showing the number of Patents issued to citizens of different States in 1851...... 25
III. CLASSIFIED LIST OF EXPIRED PATENTS.
Classified List of Patents that have expired in the year 1851......
I.-Agriculture, including Implements and Operations..
II.—Metallurgy and Manufacture of Metals.....
III.-Manufacture of Fibrous and Textile Substances...
IV.-Chemical Processes, Manufactures, and Compounds..
V.-Calorifics, comprising Lamps, Fire-places, Stoves, &c...
VI.-Steam and Gas Engines.....
VII.-Navigation and Maritime Implements...
VIII.—Mathematical, Philosophical, and Optical Instruments....