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| All Patents in class 92/78 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,544,644 | Jul. 07, 1925 | F.A. Jimerson | Fluid-actuated rotary tool | |
| 1,591,539 | Jul. 06, 1926 | A. Levedahl | Crank-case venting means for pneumatic tools | ||
| 1,591,540 | Jul. 06, 1926 | R.A. Norling, A. Levedahl | Crank-case venting means for pneumatic tools | ||
 | 2,300,747 | Nov. 03, 1942 | E.C. Read | Steam engine | |
| 2,306,768 | Dec. 29, 1942 | D.D. Wile | Control Device | ||
| 2,375,718 | May 08, 1945 | T.W. Ashcroft, W.G. Winkels | Crankcase Air-Pressure Control Means | ||