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| All Patents in class 418/108 | |||||
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| Number | Date | Patentee | Title | Type | |
| 583,897 | Jun. 08, 1897 | M.P. Elgen | Rotary Engine | rotary steam engines | |
| 685,775 | Nov. 05, 1901 | T.J. Lindsay | Rotary Pump or Blower | rotary pumps | |
| 2,460,047 | Jan. 25, 1949 | A. Von Wangenheim | Vane Pump and Pressure Control Means | vane pumps | |
| 3,097,571 | Jul. 16, 1963 | F.A. Kaman | Motor for pneumatic drill | handheld power drills | |