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| All Patents in class 417/564 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,428,402 | Sep. 05, 1922 | G.F. Steedman | Reciprocating Pump or Compressor | reciprocating pumps | |
| 1,708,158 | Apr. 09, 1929 | E.H. Stedman | Valve structure for compressors | air compressors | |