This database indexes patents issued to Cincinnati and Hamilton County, Ohio inventors from 1814 through 1873. Each entry provides a link to the U.S. Patent & Trademark Office website. TIFF software is required to view a patent's full-size image.
History
Online Resources
Explora (EBSCO) 
Includes topic overviews that provide students with a starting point for research; articles, essays, and primary source documents to help students feel successful in their research; and reading level indicators to simplify discovery of grade-appropriate content.