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Iowa Inventors Database
(1843-2009)



Main Menu Search Patents

Iowa Counties
To view patents for locations within a county, select the county name.
Adair Clay Hancock Madison Ringgold
Adams Clayton Hardin Mahaska Sac
Allamakee Clinton Harrison Marion Scott
Appanoose Crawford Henry Marshall Shelby
Audubon Dallas Howard Mills Sioux
Benton Davis Humboldt Misc. Story
Black Hawk Decatur Ida Mitchell Tama
Boone Delaware Iowa Monona Taylor
Bremer Des Moines Jackson Monroe Union
Buchanan Dickinson Jasper Montgomery Van Buren
Buena Vista Dubuque Jefferson Muscatine Wapello
Butler Emmet Johnson O'Brien Warren
Calhoun Fayette Jones Osceola Washington
Carroll Floyd Keokuk Page Wayne
Cass Franklin Kossuth Palo Alto Webster
Cedar Fremont Lee Plymouth Winnebago
Cerro Gordo Greene Linn Pocahontas Winneshiek
Cherokee Grundy Louisa Polk Woodbury
Chickasaw Guthrie Lucas Pottawattamie Worth
Clarke Hamilton Lyon Poweshiek Wright

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