US Patent: 898,997
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| Nut Wrench
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Patentee:
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| George P. Sprague (exact or similar names) - Arlington, Middlesex County, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 11, 1907 |
| Granted: |
Sep. 15, 1908 |
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Patent Pictures:
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George P. Sprague patent September 15, 1908 |
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Stan Schulz
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Description: |
| "T" handle with a swivel; the head has a dovetail slot to allow for interchange of different sizes of sockets. Compare Sprague's parallel ratchet wrench patent no. 898,996. |
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