US Patent: 1,866,771
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| Wrench
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Patentee:
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| Joseph N. Johnson, II (exact or similar names) - Irwin, Merced County, CA |
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Patent Dates:
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| Applied: |
Jan. 28, 1929 |
| Granted: |
Jul. 12, 1932 |
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Patent Pictures:
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1 | 2
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Joseph N. Johnson patent July 12, 1932 |
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Stan Schulz
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Description: |
| An otherwise unmarked "parrot jaw" pliers has the square steps feature in the jaws, and is marked with the patent number. Another known example with a four-position "slip jaw joint" is marked "SuPERFORM Oakland Calif. U.S.A." Magazine ads for SuPERFORM date to the late 1940s.
Claim #4 was "disclaimed" in 1945.
Munn & Co., attorneys |
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