US Patent: 933,096
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| Wrench
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Patent Dates:
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| Applied: |
Mar. 25, 1908 |
| Granted: |
Sep. 07, 1909 |
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Patent Pictures:
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William Hilliard Munro patent September 7, 1909 |
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Description: |
| Parallelogram action self-adjusting wrench. Compare to the ELLRICH based on patent no. 366,246 (July 12, 1887).
Produced as the LAKE SUPERIOR wrench; a small size was given away as a premium with several farm magazine subscriptions.
Improved by pat no. 972,052, issued Oct. 4. 1910. |
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