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| All Patents in class 137/625.46 | |||||
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| Number | Date | Patentee | Title | Type | |
| 491,855 | Feb. 14, 1893 | J.W. Raymond | Gas Engine | gas and gasoline engines | |
| 1,248,851 | Dec. 04, 1917 | C.L. Heisler | Distributing Powdered Material | mixing machines | |
| 2,360,695 | Oct. 17, 1944 | R.H. McClellan, C.E. Linden | Hydraulic gear shifting and driving system | radial drill presses | |
| 2,912,011 | Nov. 10, 1959 | F.G. Burg | Valve structure | drill presses | |
| 3,550,628 | Dec. 29, 1970 | D.J. Warner | Fluid Control Valve | valves | |