US Patent: 690,407
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| Wrench
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Patent Dates:
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| Applied: |
Sep. 20, 1901 |
| Granted: |
Jan. 07, 1902 |
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Patent Pictures:
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Frank W. Dent Patent January 7. 1902 |
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Description: |
| This improvement to William Hatten's January 16, 1900 patent (no. 641,451) adds refinements to deal with the effects of wear. The gripping portion is called a clutch in the specifications.
Dent produced the wrench, and a company variously identified as the Lutch or Clutch Wrench Co. also produced it. |
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