US Patent: 2,108,866
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| Socket Wrench
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Patentee:
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| Sigmund Mandl (exact or similar names) - Milwaukee, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 17, 1936 |
| Granted: |
Feb. 22, 1938 |
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Patent Pictures:
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Sigmund Mandl patent February 22, 1938 |
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Stan Schulz
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Description: |
| Rotating ring activated plunger on sockets to release "couplers" of the type described in patent nos. 1,982,008 or similar "spring / ball detent" socket retainers. |
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