US Patent: 1,793,714
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| Duplex Wrench
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Patentee:
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| Emil Newberg (exact or similar names) - Brockton, Plymouth County, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 14, 1928 |
| Granted: |
Feb. 24, 1931 |
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Patent Pictures:
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Emil Newberg patent Febr. 24, 1931 |
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Stan Schulz
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Description: |
| The twist puts the head in the hand flat to the palm rather than "edge on," -- "to enable the user to manipulate the wrench without discomfort." |
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