US Patent: 501,942
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Tool for trimming screw-threads
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Patentee:
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Clinton Allen Higbee (exact or similar names) - Philadelphia, PA |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Jun. 20, 1892 |
Granted: |
Jul. 25, 1893 |
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Jeff Joslin
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Description: |
This is a tool to trim the start of a screw-thread in accordance with the inventor's patent 447,775. See also Canada patent CA-44,446. |
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