US Patent: 557,311
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| Wrench
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Patentee:
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| Henry J. Martin (exact or similar names) - Chicago, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 20, 1895 |
| Granted: |
Mar. 31, 1896 |
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Patent Pictures:
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Henry J. Martin patent March 31, 1896 |
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Stan Schulz
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Description: |
| Worm and rack adjustable pocket wrench with the worm engaging teeth cut in opposite sides of a slot running up the mid-line of the handle.
The specifications detail how the parts are assembled in the movable jaw of this design.
Cited as a reference in patent no. 2,444,135. |
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