| All Patents in class 74/519 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 96,636 | Nov. 09, 1869 | G.N. Tibbles | Traction Engine | steam traction engines |
| 151,364 | May 26, 1874 | J.W. Douglas | Improvement in the construction of pump-gearing | household hand pumps |
| 215,808 | May 27, 1879 | G.H. Corliss | Beam for Steam Engines | steam engines |
| 989,708 | Apr. 18, 1911 | C.L. Heisler, L.G. Neely | Swing Frame for Pumping Oil Wells | oilfield machinery |
| 1,258,952 | Mar. 12, 1918 | J.M. Short | Drilling Machine | |
| 1,835,842 | Dec. 08, 1931 | G.H. Benzon, Jr. | Feed Mechanism | metal planers |
| 2,005,696 | Jun. 18, 1935 | G. Horner, P.M. Henkes, G. Gorton | Machine Tool | milling machines |
| 2,337,513 | Dec. 21, 1943 | O.H. Watson | Composite Lever for Weighing Scales | scales and balances |
| 2,631,576 | Mar. 17, 1953 | C.H. Schowalter | Valve Operating Mechanism | internal combustion engine valves |
