US Patent: 22,122
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Screw-Wrench
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Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Granted: |
Nov. 23, 1858 |
Patent Pictures:
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Joseph Hyde Pat. Nov. 23, 1858 |
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Stan Schulz
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Description: |
The patent describes a wrench assembled from a number of malleabe iron parts. The adjustable jaw slides on parallel rods. The adjusting screw is placed in the center of the jaw and handle. |
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