US Patent: 282,606
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| Watch Key
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Patentee:
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| John S. Birch (exact or similar names) - New York, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 05, 1882 |
| Granted: |
Aug. 07, 1883 |
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Patent Pictures:
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John S. Birch patent August 7, 1883 |
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Stan Schulz
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Description: |
| Another of Birch's self-adjusting socket designs; differs from 282,605 in that the internal parts run full length, and there is a slider button on the side of the case.
British patent GB-188303841 registered Aug. 7, 1883 appears to correspond to the two patents rolled into one. |
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