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| All Patents in class 137/512.1 | |||||
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| Number | Date | Patentee | Title | Type | |
| 38,444 | May 05, 1863 | J.W. Douglas | Improvement in pumps | household hand pumps | |
| 213,375 | Mar. 18, 1879 | H.P. Benjamin, J. Badger | Valve for Bellows | valves | |
| 1,428,402 | Sep. 05, 1922 | G.F. Steedman | Reciprocating Pump or Compressor | reciprocating pumps | |
| 1,515,474 | Nov. 11, 1924 | J.G. Gibson | Valve | internal combustion engine valves | |