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| Patents Granted on 1974-08-13 | |||||
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| Number | Date | Patentee | Title | Type | |
| D232,374 | Aug. 13, 1974 | D.S. Cooper, C.L. Wetherby, J.W. Stackhouse, D.R. Houst | Tractor | lawn mowers | |
| 3,828,753 | Aug. 13, 1974 | K.N. Reddy | Flywheel Magneto Ignition System | ignition systems | |
| 3,829,257 | Aug. 13, 1974 | D.H. Goering | Rotary fluid engine | hot air engines | |