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| All Patents in class 417/315 | |||||
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| Number | Date | Patentee | Title | Type | |
| 120,823 | Nov. 14, 1871 | J.M. McMaster | Improvement in propulsion of canal-boats | boats and ships | |
| 2,035,096 | Mar. 24, 1936 | H. Schneider | Engine Accessory Drive | internal combustion engines | |
| 2,383,092 | Aug. 21, 1945 | G.A. Wahlmark | Hydraulic circuit | ||
| 2,502,316 | Mar. 28, 1950 | C.F. Erikson | Pumping Mechanism | industrial machine lubrication | |