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| All Patents in class 60/427 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,588,972 | Jun. 15, 1926 | M. Machacek | Hydraulic feeding mechanism for mortising machines | mortising machines | |
| 2,286,880 | Jun. 16, 1942 | W.A. Traut | Hydraulic Control System | ||
| 2,898,891 | Aug. 11, 1959 | R.J. Flanigan, N.V. Gusching | Hydraulic flow control | ||
| 2,921,439 | Jan. 19, 1960 | F.G. Krafft | Pump Control | hydraulic apparatus | |