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| All Patents in class 415/174.3 | |||||
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| Number | Date | Patentee | Title | Type | |
| 446,061 | Feb. 10, 1891 | L.J. Everest | Rotary Engine | rotary steam engines | |
| 1,967,316 | Jul. 24, 1934 | D.A. Meeker | Pump | ||
| 2,068,536 | Jan. 19, 1937 | D.P. Davies | Pump | centrifugal pumps | |
| 2,604,852 | Jul. 29, 1952 | M.H. Baker | Pump Impeller | reciprocating pumps | |
| 2,733,682 | Feb. 07, 1956 | R.R. Langteau | Pump Shaft Indexing Means | pump stuffing boxes and seals | |