CA Patent: CA-33,864
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| Pipe Wrench
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Patentee:
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| Thomas W. Fisher (exact or similar names) - Helena, MT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 19, 1890 |
| Granted: |
Mar. 05, 1890 |
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Patent Pictures:
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Thomas W. Fisher patent March 5, 1890 edited from Canadian Patent Office Record and Canadian Patents Database |
CIPO Data
Espacenet patent
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Stan Schulz
33,864 in Canadian Patents Database
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Description: |
| The adjustment combines a rack and pawl primary size adjustment combined with a parallelogram movement to tighten and relax the grip.
Corresponding U.S. patent 421,688 was granted Feb. 16, 1890. |
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