US Patent: 390,422
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| Wrench
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Patentee:
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| Oscar C. White (exact or similar names) - Wichita, KS |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 02, 1888 |
| Granted: |
Oct. 02, 1888 |
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Patent Pictures:
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Oscar C. White patent October 2, 1888 |
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Stan Schulz
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Description: |
| Adjustable box end wrench; one end for square nuts and the other end for hexagonal nuts.
Ken Cope's "American Wrench Makers 1830-1930" lists White as producing the wrench, based on a SCIENTIFIC AMERICAN notice of the patent. |
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