US Patent: 279,993
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| Carriage Wrench
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Patentee:
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| David True (exact or similar names) - Salisbury, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 17, 1883 |
| Granted: |
Jun. 26, 1883 |
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Patent Pictures:
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David True Pat. June 26, 1883 |
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Stan Schulz
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Description: |
| The patent applies the concept of interchangeable sockets to True's broader evolving design for an axle-nut wrench. Related patents include 271,549 (January 30, 1883), 291,961, 292,186, and 305,767. |
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