US Patent: D287,928
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| Pivoted Jaw Wrench
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Patentee:
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| Kiyoshi Watanabe (exact or similar names) - Sanjo, Japan |
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Patent Dates:
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| Applied: |
Apr. 12, 1984 |
| Granted: |
Jan. 27, 1987 |
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Patent Pictures:
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Kiyoshi Watanabe design patent January 27, 1987 |
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Stan Schulz
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Description: |
| Self-adjusting pipe and nut wrench, based on the "MASTERENCH". The hook jaw has a "bump" to facilitate opening with the thumb.
The specifications cite U.S. patent nos. D184,451, 65,465, 1,885,616, 2,028,406, 2,057,899, 2,559,973, 2,645,145, and a couple of foreign patents as references. |
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