| All Patents in class 91/335 |
Patents 1 -
15
of 15
      |
| Number | Date | Patentee | Title | Type |
| 16,515 | Jan. 27, 1857 | S.P. Francisco, P.L. Weimer | Steam Hammer | steam hammers |
| 45,896 | Jan. 10, 1865 | W.D. Grimshaw | Atmospheric Hammer | power hammers |
| 385,580 | Jul. 03, 1888 | G.B. Snow | Steam Bell Ringer | steam apparatus |
| 504,205 | Aug. 29, 1893 | G.E. Dow | Engine Governor | steam engine governors |
| 541,785 | Jun. 25, 1895 | J.F. Doolittle | Steam Hammer | steam hammers |
| 1,062,808 | May 27, 1913 | H. Tscherning | Apparatus for jarring and pressing granular materials | |
| 1,132,649 | Mar. 23, 1915 | B. Brazelle | Pneumatic tool | pneumatic tools |
| 1,938,762 | Dec. 12, 1933 | F.S. Haas | Grinding Machine | cylindrical grinders |
| 1,998,003 | Apr. 16, 1935 | L.F. Nenninger, C.W. Goodrich, H. Ernst | Hydraulic Feed Control | hydraulic apparatus |
| 2,051,052 | Aug. 18, 1936 | E.K. Morgan | Machine Tool Hydraulic Control System | hydraulic apparatus |
| 2,178,850 | Nov. 07, 1939 | A.H. Dall | Spindle Oscillator | grinding machines |
| 2,234,647 | Mar. 11, 1941 | O.A. Kehle | Fluid motor | pneumatic tools |
| 2,470,415 | May 17, 1949 | E.Y. Seborg | Drive mechanism | |
| 2,612,868 | Oct. 07, 1952 | R.P. Fitzgerald | Pneumatic drop hammer | drop hammers |
| 2,775,235 | Dec. 25, 1956 | W.F. Jessup | Booster for Template Controlled Truing Mechanism | grinder dressers |
