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US Patent: 454,917
Pipe Wrench
Patentee:
Henry Phillips (exact or similar names) - Chicago, IL

USPTO Classifications:
81/403, 81/424.5

Tool Categories:
wrenches : pipe wrenches : pipe tongs

Assignees:
None

Manufacturer:
Henry Philips - Chicago, IL

Witnesses:
Celeste P. Chapman
Davida J. Johnson
Patent Dates:
Applied: Jun. 19, 1890
Granted: Jun. 30, 1891

Patent Pictures:
Henry Philips patent June 30, 1891
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Description:
This tongs-type pipe wrench has the adjustable pivot point on a threaded "stem" which is adjusted by a threaded ring-nut.

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