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| Patents Granted on 1973-12-11 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,777,527 | Dec. 11, 1973 | J.H. Lohman | Jig for setting the resistance Stops in a Rotary Bending Machine | sheet metal bending machines | |
| 3,777,788 | Dec. 11, 1973 | M.R. Estabrook | Cyclone separator | separators | |