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US Patent: 819,536
Shifter-lock for pawl-and-ratchet tools
Patentee:
Zachry T. Furbish (exact or similar names) - Philadelphia, PA

USPTO Classifications:
192/43.1, 74/127

Tool Categories:
screwdrivers : screwdriver mechanisms : spiral screwdrivers

Assignees:
North Brothers Manufacturing Co. - Philadelphia, PA

Manufacturer:
North Brothers Manufacturing Co. - Philadelphia, PA

Witnesses:
Joseph H. Klein
William A. Barr
Patent Dates:
Applied: Jan. 30, 1904
Granted: May 01, 1906

Patent Pictures: [ 1 | 2 ]
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"Vintage Machinery" entry for North Brothers Manufacturing Co.

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