| All Patents in class 91/350 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 3,042 | Apr. 10, 1843 | J. Nasmyth | Machinery or apparatus operated by steam for forging, stamping, and cutting iron and other substances | steam hammers |
| 55,772 | Jun. 19, 1866 | C.R. James | Improvement in operating hammers and stamps | steam hammers |
| 430,311 | Jun. 17, 1890 | J.W. Eisenhuth | Cut-Off for Compound Engines | steam engines |
| 679,637 | Jul. 30, 1901 | E.E. Redfield | Engine | |
| 2,234,647 | Mar. 11, 1941 | O.A. Kehle | Fluid motor | pneumatic tools |
| 2,251,329 | Aug. 05, 1941 | G.H. Ekstrom | Rubbing machine | |
