US Patent: D27,824
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| Pump Wrench
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Patentee:
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| Oscar P. Trahern (exact or similar names) - Rockford, IL |
| USPTO Classifications: |
| D8/28 |
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Patent Dates:
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| Applied: |
Sep. 17, 1897 |
| Granted: |
Nov. 09, 1897 |
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Patent Pictures:
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Oscar P. Trahern design patent Nov. 9, 1897 |
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Stan Schulz
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Description: |
| Design to fit two sizes of hexagon. P.T. Rathbone's "History of the Old Time Farm Implement Companies and the Wrenches They Issued" shows an example of the O.P. Trahern pump wrench.
Term of patent 3 1/2 years. |
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