US Patent: 145,953
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| Wrenches
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| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 07, 1873 |
| Granted: |
Dec. 30, 1873 |
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Patent Pictures:
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John Lee Pat. Dec. 30, 1873 |
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Stan Schulz
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Description: |
| A lever handle on the back of the sliding jaw operates a movable wedge which clamps the jaw against teeth on the back side of the main shank. This is an improvement on Lee's June 3, 1873 patent (no. 139,622). |
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