US Patent: 756,197
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| Tool Attachment
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Patentees:
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| Albert A. Jarvis (exact or similar names) - Berkley, VA |
| William H. Lane (exact or similar names) - Berkley, VA |
| USPTO Classifications: |
| 81/36 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Mar. 29, 1904 |
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Jeff Joslin
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Description: |
| Gear reduction mechanism. |
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