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| All Patents in class 137/625.12 | |||||
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| Number | Date | Patentee | Title | Type | |
| 39,259 | Jul. 14, 1863 | B. Holly | Pump | pumps | |
| 1,492,980 | May 06, 1924 | F.W. Hodges | Valve | valves | |
| 1,949,511 | Mar. 06, 1934 | C.G. Flygare | Grinding machine table operating mechanism | grinders | |
| 2,615,671 | Oct. 28, 1952 | M.E. Landon, Administratrix, W.S. Landon, deceased (Estate of) | Metering Valve | metering apparatus | |