US Patent: 769,042
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Chain Pipe Wrench
Improvements in Chain Pipe-Wrenches Having an Enclosed Chain-Receiving Passage
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Patentees:
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| George Amborn (exact or similar names) - New York, NY |
| George W. Bufford (exact or similar names) - New York, NY |
| USPTO Classifications: |
| 81/70 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 19, 1904 |
| Granted: |
Aug. 30, 1904 |
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Patent Pictures:
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George Amborn and George W. Bufford patent August 30, 1904 |
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Stan Schulz
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Description: |
| Chain wrench - in the ancestry of the single jaw "AGRIPPA" chain wrench.
Arthur S. Browne - patent attorney
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