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| All Patents in class 60/402 | |||||
| Number | Date | Patentee | Title | Type | |
| 1,832,694 | Nov. 17, 1931 | L.F. Nenninger, H. Ernst | Auxiliary Manual Means for Actuating Hydraulic Motors | hydraulic apparatus | |
| 2,847,829 | Aug. 19, 1958 | J.N. Gladden | Power Braaking System | vehicle brakes | |