| All Patents in class 91/1 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 453,247 | Jun. 02, 1891 | S. Smith | Rotary Steam Engine | rotary steam engines |
| 588,655 | Aug. 24, 1897 | J.F. Raders | Non-Centrifugal Governor and Speed Indicator | steam engine governors |
| 955,568 | Apr. 19, 1910 | W.D. White | Water-wheel governor | water wheels |
| 1,687,369 | Oct. 09, 1928 | F.J. Lapointe | Hydraulic broaching machine | broaching machines |
| 3,537,356 | Nov. 03, 1970 | E.I. Odell | Hydraulic Control System | machine tool controls |
| 3,538,813 | Nov. 10, 1970 | T.E. Clyce, J.Y. Cromeens | Remote control system | woodworking machine mechanisms |
