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| All Patents in class 74/665S | |||||
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| Number | Date | Patentee | Title | Type | |
| 271,343 | Jan. 30, 1883 | P.H. Loud | Traction Engine | steam traction engines | |
| 1,666,906 | Apr. 24, 1928 | C.L. Mattison | Wood-turning machine | wood lathes | |
| 2,308,352 | Jan. 12, 1943 | J.Y. Blazek, G.E. Sears | Grinding tool speed reducer | crankshaft maintenance | |
| 2,946,232 | Jul. 26, 1960 | G.H. Jones | Gear Drive | metalworking machine gearing | |