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| All Patents of Type: pistons | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,739,007 | Dec. 10, 1929 | E.T. Larkin | Piston for Internal Combustion Engines | pistons | |
| 1,949,542 | Mar. 06, 1934 | E.T. Larkin | Piston | pistons | |
| 2,136,416 | Nov. 15, 1938 | W.C. Dehn | Piston | pistons | |
| 2,472,288 | Jun. 07, 1949 | W.W. Schettler, L.E. Endsley, J.H. Lentell | Piston | pistons | |
| 2,571,022 | Oct. 09, 1951 | L.E. Endsley | Piston Cooling | pistons | |
| 2,687,930 | Aug. 31, 1954 | G.L. Smith | Piston for Internal Combustion Engines | pistons | |