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US Patent: D29,520
Wrench Frame
Patentee:
Charles H. Metz - Waltham, MA

USPTO Classifications:
D8/22

Tool Categories:
wrenches : wrench components : wrench jaw components
wrenches : bicycle or pocket wrenches

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Frank G. Parker
Frank G. Hattie
W. Stanley Campbell
H. J. Miller

Patent Dates:
Applied: Aug. 22, 1898
Granted: Oct. 18, 1898

Patent Pictures: [ 1 | 2 | 3 ]
Charles H. Metz Patent October 18, 1898
USPTO pdf tiff
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Description:
The square stud on the back angle of the fixed jaw is the prominent feature of this design. The stud feature appears on at least two bicycle wrenches of the period. One is marked only PAT*D OCT 18, 1898. The other is a variant of the Schrader Adjustable Wrench and Spanner based on pat. nos. 582,238 and 644,033.

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