US Patent: 639,812
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Monkey Wrench
Improvements in Monkey-Wrenches, Tongs or Similar Tools
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Patentee:
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| Thomas Jensen (exact or similar names) - Arendal, Norway |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 04, 1898 |
| Granted: |
Dec. 26, 1899 |
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Patent Pictures:
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Thomas Jensen patent Dec. 26, 1899 |
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Stan Schulz
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Description: |
| The principle of an auxiliary handle providing additional gripping power as applied to various wrench and tongs type tools.
A further development of the tongs type tool received patent no. 644,825 on March 6, 1900. |
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