| All Patents in class 200/56R |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
| | 530,433 | Dec. 04, 1894 | F. Lane | Indicator for Steam Engines |
 | 1,639,965 | Aug. 23, 1927 | W.F. Priest | Alarm gauge |
| | 1,690,517 | Nov. 06, 1928 | C.J. Brown, C.H. Wilson | Electrical controller and recorder |
 | 2,211,052 | Aug. 13, 1940 | L.A. Cole | Pressure limiting device |
| | 2,333,982 | Nov. 09, 1943 | R.F. Brown | Electrical Contactor Device |
| | 3,056,865 | Oct. 02, 1962 | R.H. Damon, Jr., J.P. Reardon | Magnetic Cut-Off for Scales |
| | 3,365,711 | Jan. 23, 1968 | G.N. Levesque | Hydrostatic Bearing Load Signaling Device |
