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Patents

This Connecticut State Library Pathfinder leads you to key information resources on the Web and in our Library relating to patents.

Descriptions and Drawings    Indexes for Patents    Northeast Depository Libraries

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

Patent Date 

Title 

Location
1790-Present U.S. Patent Office

1790-Present Google  
1790-1860 United States Patents SL Fed Doc C 21.23:Microfilm-vault
1845-1871Not complete, earlier years text only. Annual Report to Congress by the Commission of Patents SL Fed Doc C 21.1/1:Also in Serial Set
1872-2002 Official Gazette SL Fed Doc C 21.5:
1872-1898,1949-1963 Official Gazette SL Fed Doc C 21.5:Microfilm-vault
1994-Present USAPat: Facsimilie images of U.S. Patents on CD-ROM(used with Patents BIB index)  SL Fed Doc C 21.31:

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Indexes for Patents Available at or through the State Library

Patent Date 

Title 

Location
1790-1836 Early Unnumbered U.S. Patents, 1790-1836 SL GIS Ref T 223.D7 R47
1790-1836 List of Patents Granted by the U.S., 1790-1836 (1872) SL Fed Doc Ref I 23.7:
1790-1873 Subject Matter Index of Patents of Inventions 1790-1873, 3 vols. SL 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 SL Stacks TL 820.A4 1900
1800-1890 Connecticut Patents Project  SL 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 SL Fed Doc C 21.5/2:
1971-Present U.S. Patent Office
1790-Present Google  

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Northeast Patent Depository Libraries

Location 

Telephone Number
Providence Public Library (401) 455 - 8027
Boston Public Library (617) 536 - 5400 ext. 2226
W.E.B. Dubois Library, UMASS 413-545-2765
New York Public Library(Science, Industry and Business Library) (212) 592 - 7000

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Prepared by the Government Information and Reference Services Unit, page revised 11/2007.