http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f8-subject=Patent extensions) https://catalog.wrhs.org/collections/search?docsPerPage%3D100;f8-subject%3DPatent%20extensions Results for your query: docsPerPage=100;f8-subject=Patent extensions Thu, 01 Jan 1970 12:00:00 GMT In the matter of the application of James Haines, administrator of the estate of Jonathan Haines, deceased, for the extension of letters patent of said Jonathan Haines. Haines, James, b. 1822, United States Patent Office. https://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc https://catalog.wrhs.org/collections/view?docId=marc/skclmarc202890322046876.mrc Thu, 01 Jan 1970 12:00:00 GMT