US Patent: 426,956
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Wrench
Improved Pipe Wrench
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Patentee:
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| Daniel R. Porter (exact or similar names) - Chelsea, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 21, 1889 |
| Granted: |
Apr. 29, 1890 |
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Patent Pictures:
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Daniel R. Porter patent April 29, 1890 |
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Stan Schulz
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Description: |
| The focus of the patent is the guide for the shank of the movable jaw, and the ears on the "shoe."
Corresponding Canadian patent CA-35,548 was granted Dec. 2, 1890.
Improved by Daniel R. Porter's April 21, 1891 patent no. 450,681. |
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