US Patent: 502,410
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| Ratchet Wrench
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Patentee:
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| William H. Diedrick (exact or similar names) - San Francisco, CA |
| USPTO Classifications: |
| 81/61 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 21, 1892 |
| Granted: |
Aug. 01, 1893 |
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Patent Pictures:
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William H. Diedrick patent August 1, 1893 |
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Stan Schulz
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Description: |
| Ratchet wrench with insertable sockets. The specifications note the strength of the ratchet pawl. |
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