US Patent: 404,789
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Pipe Wrench
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Patentee:
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Charles L. Dunham (exact or similar names) - Union City, PA |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Jan. 12, 1888 |
Granted: |
Jun. 04, 1889 |
Patent Pictures:
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Charles L. Dunham patent June 4, 1889 |
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Stan Schulz
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Description: |
A variant of chain wrench with a rack teeth on the lever handle engaging rack teeth on the leading piece of the gripping links. |
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