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| All Patents in class 60/393 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,782,802 | Feb. 26, 1957 | B. Sassen | Hydraulic Control System | hydraulic apparatus | |
| 2,847,829 | Aug. 19, 1958 | J.N. Gladden | Power Braaking System | vehicle brakes | |