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| All Patents in class 184/18 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,772,461 | Aug. 12, 1930 | C.B. Jahnke | Lubrication Means | internal combustion engine lubrication | |
| 1,851,304 | Mar. 29, 1932 | E.J. Fish | Lubricating Means | internal combustion engine lubrication | |
| 1,978,714 | Oct. 30, 1934 | J.H. Lentell | Lubricating Means | internal combustion engine lubrication | |
| 2,873,002 | Feb. 10, 1959 | E.L. Dahlund | Variable Delivery Lubricant Supply Means for Engines | internal combustion engine lubrication | |