US Patent: 3,260,321
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| Dual Capacity Scale with Disengageable Counterweight on Load Transmission Rod
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Patentees:
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| Roger H. Damon, Jr. (exact or similar names) - St. Johnsbury, Caledonia County, VT |
| John B. Rolfe (exact or similar names) - St. Johnsbury, Caledonia County, VT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 21, 1964 |
| Granted: |
Jul. 12, 1966 |
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Joel Havens
"Vintage Machinery" entry for Fairbanks Morse & Co.
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