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Primary view of Well-Drilling Tool.
Reed, Clarence E.
January 31, 1922
Primary view of Molding Apparatus.
Nelson, William E.
October 31, 1922
Primary view of Shutter Regulator for Moving-Picture Machines
Journeay, Fred Y.
October 31, 1922
Primary view of Semaphore
Durán, Arturo
October 31, 1922
Primary view of Fuse carrier.
Burton, Frank M.
January 31, 1922
Primary view of Player Piano
Pace, Vara L.
January 31, 1922
Primary view of Map Hanger
Chunn, Richard M.
January 31, 1922
Primary view of Fishing Device for Oil Wells.
Sorensen, Sam
January 31, 1922
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