US Patent: 424,583
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| Nut Wrench
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Patentee:
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| David Steiner (exact or similar names) - Adamsburg, PA |
| USPTO Classifications: |
| 81/56 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 11, 1889 |
| Granted: |
Apr. 01, 1890 |
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Patent Pictures:
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David Steiner patent April 1, 1890 |
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Stan Schulz
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Description: |
| A gear-powered socket wrench for construction work on bridges, railroads, etc. An adjustable frame and clamping mechanism position the socket. |
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