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CA Patent: CA-448,026
Wrench
Patentee:
August C. Ertner - Seattle, WA

USPTO Classifications:

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

Assignees:
Federal Trading Company - Seattle, WA
Frank Thorn Mortgage Company - Seattle, WA

Manufacturer:
Unknown

Witnesses:
none listed

Patent Dates:
Granted: Apr. 20, 1948

Patent Pictures:
August C. Ertner patent April 20, 1948
CIPO Data
Report data errors or omissions
CA-448,026 in ESPACENET
Description:
Quick adjust wrench employing two or more plates to hold adjustment. The official applicants were two companies, with Ertner named as inventor.

Corresponding U.S. patent 2,391,143 was granted Dec. 18, 1945. The wrench was produced as the ERTNER SPEED WRENCH.

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