| All Patents in class 91/335 |
Patents 1 -
10
of 16
      |
| Picture | Number | Date | Patentee | Title |
| | 16,515 | Jan. 27, 1857 | S.P. Francisco, P.L. Weimer | Steam Hammer |
 | 45,896 | Jan. 10, 1865 | W.D. Grimshaw | Atmospheric Hammer |
| | 385,580 | Jul. 03, 1888 | G.B. Snow | Steam Bell Ringer |
| | 504,205 | Aug. 29, 1893 | G.E. Dow | Engine Governor |
| | 541,785 | Jun. 25, 1895 | J.F. Doolittle | Steam Hammer |
| | 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 |
| | 1,938,762 | Dec. 12, 1933 | F.S. Haas | Grinding Machine |
| | 1,998,003 | Apr. 16, 1935 | L.F. Nenninger, C.W. Goodrich, H. Ernst | Hydraulic Feed Control |
| | 2,051,052 | Aug. 18, 1936 | E.K. Morgan | Machine Tool Hydraulic Control System |
