US Patent: 738,015
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| Adjustable Spanner Wrench
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Patentee:
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| Jere C. Dufresne (exact or similar names) - Trenton, NJ |
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Patent Dates:
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| Applied: |
Oct. 29, 1902 |
| Granted: |
Sep. 01, 1903 |
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Patent Pictures:
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1 | 2
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Jere C. Dufresne patent September 1, 1903 |
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Stan Schulz
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Description: |
| Adjustable hook spanner. The adjustable component is a reversible spring-loaded sliding jaw with internal teeth that engage rack teeth on the inner face of the "fixed jaw." |
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