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US Patent: 902,957
Locking mechanism for ratchet screw-drivers
Patentee:
Zachry T. Furbish (exact or similar names) - Philadelphia, PA

USPTO Classifications:
74/127, 74/577R, D8/82

Tool Categories:
screwdrivers : screwdriver mechanisms : spiral screwdrivers

Assignees:
North Brothers Manufacturing Co. - Philadelphia, PA

Manufacturer:
North Brothers Manufacturing Co. - Philadelphia, PA

Witnesses:
William A. Barr
Joseph H. Klein

Patent Dates:
Applied: Dec. 31, 1902
Granted: Nov. 03, 1908

Patent Pictures:
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