US Patent: 1,072,535
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| Wrench
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Patentee:
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| Frederick Waldner (exact or similar names) - Alexandria, SD |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 22, 1913 |
| Granted: |
Sep. 09, 1913 |
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Patent Pictures:
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Frederick Waldner patent September 9, 1913 |
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Stan Schulz
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Description: |
| A left- and right-hand threaded adjusting screw moves wedge-faced cross-heads with anti-friction rollers which open and close the jaws. |
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