US Patent: 904,397
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| Chain Pipe Wrench
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Patentee:
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| George Amborn (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: |
May 06, 1907 |
| Granted: |
Nov. 17, 1908 |
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Patent Pictures:
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George Amborn patent Nov. 17, 1908 |
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Stan Schulz
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Description: |
| The chain pintles and "locks" are formed to allow for finer adjustment - adjustment increments are roughly one-half the length of a chain link.
Arthur C. Fraser & Co. - patent attorneys
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