US Patent: 609,146
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| Wrench
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Patentee:
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| Hubert C. Hart (exact or similar names) - Unionville, CT |
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Patent Dates:
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| Applied: |
Dec. 22, 1897 |
| Granted: |
Aug. 16, 1898 |
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Patent Pictures:
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Hubert C. Hart patent August 16, 1898 |
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Stan Schulz
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Description: |
| Adjustable jaw formed from a symmetrical stamping, including extended "pegs" that form the shaft for the adjusting nut. Corresponding German "Gebrauchsmuster" registration D.R.G.M. Nr. DG-96717 dated May 25, 1898.
Known example marked AETNA PAT. AUG. 16, 98.
According to Ken Cope's "American Wrench Makers 1830-1930," Upson and Hart of Unionville, CT produced this wrench. |
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