US Patent: 130,671
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Improvement in Bedstead-Keys
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Patentee:
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Hermann Stein (exact or similar names) - New York, NY |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Granted: |
Aug. 20, 1872 |
Patent Pictures:
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Hermann Stein Pat. August. 20, 1872 |
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Stan Schulz
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Description: |
The tool is a socket wrench with a "ball-and-pin" joint between the handle and head which acts as a kind of universal joint. |
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