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1Title:  George Washington Patent Letter     
 Creator:  Washington, George 
 Dates:  1794 
 Abstract:  The George Washington patent letter may be the earliest patent issued in the United States for a self-propelled vehicle or "horseless carriage." Purchased by Frederick C. Crawford in 1951, research done at that time indicates that although this patent is listed in early patent indexes, the U.S. Patent Office has no copies of it, and no models or drawings of this invention were found. The patent certification of delivery, acceptance, and payment of application fees is signed "G. Washington by the President Edm. Randolph", with the seal of the United States affixed. 
 Call #:  MS 4671 
 Extent:  0.10 linear feet (1 folder) 
 Subjects:  Patents -- United States. | Automobiles -- Patents.
 
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2Title:  George and Margaret Knowles Papers     
 Creator:  Knowles, George and Margaret 
 Dates:  1870-1974 
 Abstract:  George Knowles was a Cleveland, Ohio, patent attorney who served as assistant executive in charge of patents in the Engineering Department of Materiel Command at Wright Field Air Corps Base (Dayton, Ohio) during World War II. Margaret Knowles was his wife. The collection consists primarily of correspondence, organizational materials, journals, and military files. The collection pertains primarily to George Knowles' military experience, involvement with patents, and organizational activities with the Cleveland Patent Law Association, Exchange Club of Euclid and the Wildwood Yacht Club. Included is a small amount of material relating to Knowles' wife, Margaret, and his nephew, Myles Knowles. 
 Call #:  MS 4447 
 Extent:  0.60 linear feet (2 containers) 
 Subjects:  Knowles, George H. 1909-1965. | Knowles, Margaret Keal. | United States. Army Air Forces -- Diaries. | World War, 1939-1945 -- Personal narratives, American. | World War, 1939-1945 -- Economic aspects -- United States. | Soldiers -- United States -- Diaries. | Patents -- United States. | Evidence, Expert -- United States. | Patent and government-developed inventions -- United States.
 
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