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| Patents Granted on 1965-12-21 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,224,241 | Dec. 21, 1965 | S.M. Dolney | Underreach Prestretch Fixture and Combination Thereof with Drawing Die Press | metal stretch forming machines | |
| 3,224,289 | Dec. 21, 1965 | B.N. Palm | Motorized head pulley | conveyors and hoppers | |
| 3,224,520 | Dec. 21, 1965 | R.H. Damon, Jr. | Transducer Mounting in Weighing Apparatus | scales and balances | |
| 3,225,117 | Dec. 21, 1965 | R.C. Harper | Weather-Resistant Plastics | manufacturing processes | |