US Patent: 2,100,034
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| Wrench
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Patentee:
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| Carl H. Leonard (exact or similar names) - Wakefield, NE |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 11, 1937 |
| Granted: |
Nov. 23, 1937 |
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Patent Pictures:
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patent 2,100,034 - edited |
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Stan Schulz
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Description: |
| "Adjustable box end" employing left- and -right hand threads to rapidly adjust the size of the opening. The patent does not address the shape of the jaw faces. |
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