US Patent: D57,775
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| Socket Wrench
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Patentee:
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| David F. Graham (exact or similar names) - Coudersport, PA |
| USPTO Classifications: |
| D8/29 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 12, 1920 |
| Granted: |
May 03, 1921 |
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Patent Pictures:
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David F. Graham patent May 3, 1921 |
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Stan Schulz
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Description: |
| The design shows a round rod with a right-angle bend, ends reduced to hexagonal cross-section, and socket interchangeable to either end. The term is 7 years.
The GRAHAM socket wrench set was advertised in June, 1920 AUTOMOBILE TOPICS. The set is shown with a hexagonal rod handle and spring clip corresponding to patent no. 1,328,428 and sockets matching design patent no. D59,417. |
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