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US Patent: 917,098
Walter  Andrew Moffat - Denver, CO

USPTO Classifications:
81/134, 81/186

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches
wrenches : pipe wrenches

Blake Wrench Manufacturing Company - Denver, CO

Blake Wrench Manufacturing Company - Denver, CO

F. Whitehead
A. P. Mackey
C. C. Hines
Joe P. Nahler

Patent Dates:
Applied: Sep. 30, 1908
Granted: Apr. 06, 1909

Patent Pictures:
Walter A. Moffat patent April 6. 1909
USPTO pdf tiff
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Replaceable hardened jaw faces; the movable jaw adjustment held by a spring-loaded toothed lever pawl that engages rack teeth on the main shank.

Produced as the DENVER WRENCH; pat no. 921,581 adds a sliding adjustment lock to the design.

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