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| All Patents in class 60/547.1 | |||||
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| Number | Date | Patentee | Title | Type | |
| 966,059 | Aug. 02, 1910 | W.T. Sears | Hydraulic intensifier | hydraulic apparatus | |
| 2,499,968 | Mar. 07, 1950 | E.M. Pfauser | Pneumatic-Hydraulic Pressure Converter | ||