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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 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin "Vintage Machinery" entry for North Brothers Manufacturing Co.
Description: Used on 'Yankee" ratcheting tools.

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