US Patent: D156,320
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| Impact Wrench Unit
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Patentee:
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| Aileen Bushnell (exact or similar names) - Aurora, IL |
| USPTO Classifications: |
| D8/69 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 02, 1948 |
| Granted: |
Dec. 06, 1949 |
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Patent Pictures:
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Aileen Bushnell design patent December 6, 1949 |
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Stan Schulz
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Description: |
| Pneumatic impact wrench design.
The specifications cite a 1942 Black and Decker catalog as relevant prior art. |
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