US Patent: 2,711,663
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| Toggle Locking Wrenches
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Patentee:
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| William Petersen (exact or similar names) - DeWitt, NE |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 04, 1954 |
| Granted: |
Jun. 28, 1955 |
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Stan Schulz
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Description: |
| Wilfred E. Lawson - patent attorney
Cited as "prior art" in patent no. 5,351,585.
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