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CA Patent: CA-22,664
Wrench
Patentees:
Benton Elmore (exact or similar names) - Redding, CA
Frederick Gratefend (exact or similar names) - Redding, CA

USPTO Classifications:

Tool Categories:
wrenches : wrench adjustment types : self-adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Oct. 21, 1885

Patent Pictures:
Benton Elmore patent Oct. 21, 1885 - edited from Canadian Patent Office Record
CIPO Data
Report data errors or omissions to steward Stan Schulz
22,664 in Canadian Patents Database
Description:
Although the available drawings differ, this self-adjusting design seems to be the same one that received U.S. patent 304,807 on Sept. 9, 1884.

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