US Patent: 942,756
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| Power Hammer
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Patentees:
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| Thomas Scott-King (exact or similar names) - Penarth, Glamorgan County, Cardiff, Wales |
| William Norris (exact or similar names) - Blackpool, Lancashire County, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 04, 1906 |
| Granted: |
Dec. 07, 1909 |
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Joel Havens
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