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| All Patents in class 92/23 | |||||
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| Number | Date | Patentee | Title | Type | |
| 38,606 | May 19, 1863 | C.E. Rymes | Improvement in hydraulic presses | hydraulic presses | |
| 43,912 | Aug. 23, 1864 | M. Hittinger | Improvement in hydraulic presses | hydraulic presses | |
| 823,480 | Jun. 12, 1906 | J.P. McLeod | Drop Hammer | drop hammers | |
| 1,078,320 | Nov. 11, 1913 | J.M. Stratton | Pump | ||
| 2,394,488 | Feb. 05, 1946 | V.G. Klein, L.C. Rotter | Lubricating Apparatus | ||
| 2,831,551 | Apr. 22, 1958 | W.A. Ross, I.A. Weaver | Safety device for lifting jacks | vehicle mechanic | |