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US Patent: 1,549,164
Pipe Wrench
Patentee:
William O. Thewes (exact or similar names) - Ridgeville, OH

USPTO Classifications:
81/101, 81/103

Tool Categories:
wrenches : pipe wrenches

Assignees:
Ridge Tool Co. - North Ridgeville, OH

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: May 26, 1922
Granted: Aug. 11, 1925

Patent Pictures:
William O. Thewes patent Aug. 11, 1925
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Description:
The design is intended to be strong enough to withstand strain at right angles to the "intended" direction (as in bending pipe), and have the spring in a protected location.

This patent and Thewe's Sept. 1, 1925 patent no. 1,552,091 are the beginning of the RIDGID line of pipe wrenches. An alternative structure in patent 1,565,338 does not appear to have been produced.

Provisional publication of corresponding British patent GB-200,068 appears in 1923 ABRIDGMENTS OF SPECIFICATIONS.

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