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CA Patent: CA-31,072
Pipe Wrench
Patentee:
Daniel R. Porter (exact or similar names) - Chelsea, MA

USPTO Classifications:

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench adjustment types : quick adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Apr. 09, 1889

Patent Pictures:
Daniel R. Porter patent Apr. 9, 1889 - edited from Canadian Patent Office Record
CIPO Data
Espacenet patent
Report data errors or omissions to steward Stan Schulz
31,072 in Canadian Patents Database
Description:
Canadian patent for a quick-adjust pipe wrench corresponding to U.S. patent 413,961.

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