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Primary view of Staple-Setting Device.
Chamberlain, Kit Carson
February 21, 1922
Primary view of Oil Well Screen.
Dobson, John A.
February 14, 1922
Primary view of Constant-Volume Valve.
Dewey, Maurice J.
February 28, 1922
Primary view of Drill Bit
Childs, William L.
February 14, 1922
Primary view of Pneumatic Disk Gin.
Garner, James C.
February 14, 1922
Primary view of Seed Cleaner
Garner, James C
February 14, 1922
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