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All Patents in class 91/442 | |||||
Number | Date | Patentee | Title | Type | |
2,058,377 | Oct. 20, 1936 | H.G. Francis | Hydraulic press control | veneer machines | |
2,127,324 | Aug. 16, 1938 | E. Cannon | Prefill valve for hydraulic presses | hydraulic metalworking presses |