In 1893, the first U.S. patent for aerial photography was issued to Cornele B. Adams of Augusta, Ga. (No. 510,758). His method of photogrammetry could produce a topographic map by means of photos of the same tract taken from different points.
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In 1899, an early U.S. patent for a golf tee was issued to African-American, George F. Grant, a dentist of Boston, Mass. (No. 638,920).
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In 1955, Christopher Cockerell, father of the hovercraft air-cushion vehicle, filed his first patent for the hovercraft. The following year he formed a company known as Hovercraft Ltd.
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