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US Patent: 1,727,623
Wrench
Patentee:
William O. Thewes - North Ridgeville, OH

USPTO Classifications:
81/101, 81/166

Tool Categories:
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Ridge Tool Co. - Elyria, OH

Witnesses:
Unknown

Patent Dates:
Applied: Jan. 11, 1928
Granted: Sep. 10, 1929

Patent Pictures: [ 1 | 2 ]
William O. Thewes Pat. Sept. 10, 1929
USPTO pdf tiff
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Description:
The wrench is identical to the patent drawing. Known example marked "RIDGID PAT 1727623 // RIDGE TOOL CO ELYRIA O U.S.A."

The wrenches with this patent number have many features carried over from Thewes' Sept. 1, 1925 patent (no. 1,552,091).

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