try another color:
try another fontsize: 60% 70% 80% 90%

Patent Databases - Specialized and Historical

About.com: Inventors
Extensive annotated list of invention-related links, includes lists like Chinese Inventions, Famous Inventors, Black Inventors, and Women Inventors
Alabama Inventors Database
Database of patents created by the Birmingham Public Library
Black Inventors by State or Country of Residence, 1834-2008, Index
Downloadable Excel Spreadsheet, Compiled by Margaret J. Collins, Illinois State Library (2008)
DNA Patents Database
Contains a collection of DNA-based patents and patent applications issued by the United States Patent and Trademark Office (USPTO) and makes the full-text of such patents and applications available to users at no cost.
From Air Brakes to Zinc Furnaces: Pittsburgh and Allegheny City Patentees 1790 - 1879
Database of patents created by the Carnegie Library of Pittsburgh
Cincinnati Inventors Database
Database of patents issued to Cincinnati and Hamilton County, Ohio Inventors from 1813 through 1873.
Confederate Patent Office
List of Patents issued by the Confederate Patent Office, 1861-1864
Historical Idaho Patents Database
Database of patents created by the University of Idaho Library
Index to Early Louisiana Patents, 1810-1890
Database of patents created by Miami University Libraries
Inventors Museum
Directory of inventors and inventions in categories like Colonial Inventors, Medical Inventions, and War Tech
Iowa Inventions Database
Database of patents created by the Iowa State Library
Miami Valley Inventors Historical Database
Bibliographic information on over 1800 patents, including biographical notes of a few inventors, cities and towns, attorneys of record, estate administrators, and assignments; covers the period 1814-1875 for an 11 county region around Dayton, OH : Butler, Champaign, Clark, Darke, Greene, Logan, Miami, Montgomery, Preble, Shelby and Warren counties
Nevada Inventors Database
US patents issued to Nevada inventors from 1862 through 1938. Created by the University of Nevada, Reno Libraries
Oklahoma Inventors Database, 1880 - 1907
Database of patents created by Oklahoma State University
South Carolina Inventors, 1793 - 1893
Database of patents created by Clemson University Libraries
U.S. Alien Property Custodian Documents Database
Database of bibliographic data for WWII patent applications that were seized by the Alien Property Custodian in 1942 and published by the Patent Office in the spring of 1943
Women Inventors Index, 1790 - 1895
Database created by the Miami University Libraries
Women of Invention: Women Inventors and Patent Holders
Compiled by The Library of Congress Science, Technology & Business Division
Wyoming Inventors Database
Databases of patents created by the Wyoming State Library
© Patent and Trademark Depository Library Association Last modified 1/08/07
Send content related comments to: Dawn Rohan (DROHAN@state.wy.us)