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Intellectual Property

Patents at the Connecticut State Library

Descriptions and Drawings of Patents Available at or through the State Library

Date

Title

Location
1790-Present U.S. Patent Office  
1790-Present Google  
1790-1860 United States Patents Fed Doc C 21.23:Microfilm-vault
1845-1871 Incomplete, earlier years text only. Annual Report to Congress / Commission of Patents  Fed Doc C 21.1/1:Also in Serial Set
1872-2002 Official Gazette Fed Doc C 21.5:
1872-1898,1949-1963 Official Gazette Fed Doc C 21.5:Microfilm-vault
1994-Present USAPat: Facsimile images of U.S. Patents on CD-ROM (used with Patents BIB index)  Fed Doc C 21.31:

Indexes for Patents Available at or through the State Library

Date

Title

Location
1790-1836 Early Unnumbered U.S. Patents, 1790-1836 GIRS Ref T 223.D7 R47
1790-1836 List of Patents Granted by the U.S., 1790-1836 (1872) Fed Doc Ref I 23.7:
1790-1873 Subject Matter Index of Patents of Inventions 1790-1873, 3 vols. Fed Doc Ref I 23.7:
1790-1839 Digest of Patents Issued by the U.S. from 1790-Jan. 1, 1839 (P. Force 1840) SpecColl T 223.V4 A2 1840
1789-1899 Digest of U.S. Automobile Patents, from 1789-July 1, 1899...1900 TL 820.A4 1900
1800-1890 Connecticut Patents Project  Conn Doc St292mus cpp
1839-1841 Digest of Patents issued by the U.S. from 1839-1841 (W. Greer 1842) SpecColl T 223.V4 A2 1840
1872-Present Index of Patents Fed Doc C 21.5/2:
1971-Present U.S. Patent Office  
1790-Present Google