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US Patent: 700,752
Cover Wrench
Patentee:
James B. Erwin - Milwaukee, WI

USPTO Classifications:
15/210.1, 81/3.43, 81/64

Tool Categories:
wrenches : jar wrenches

Assignees:
None

Manufacturer:
Unknown

Witnesses:
M. Waldo
C. L. Roesch
F. A. Ott

Patent Dates:
Applied: Jun. 13, 1901
Granted: May 27, 1902

Patent Pictures: [ 1 | 2 ]
James B. Erwin Pat. May 27, 1902
USPTO pdf tiff
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Description:
A spring wire loop is compressed by pliers type handles as shown in the drawing. The tool is marked only with the patent date. The handles are frequently found without the wire loop.

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