| All Patents in class 200/84R |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
| | 453,022 | May 26, 1891 | C.H. Norton | Grinding Machine |
 | 1,003,626 | Sep. 19, 1911 | C.E. Malcolm | Measuring Pole |
| | 1,682,789 | Sep. 04, 1928 | J.T. Janette | Controller for oil burner of home heating system |
| | 1,765,489 | Jun. 24, 1930 | J.T. Janette | Motor control for Liquid-fuel pump for home heating system |
 | 1,921,791 | Aug. 08, 1933 | C.R. Syme | Means for Adjusting the Plungers of Measuring Instruments |
| | 2,098,912 | Nov. 09, 1937 | E.J. Dillman | Control Device for Heating Systems |
| | 2,200,163 | May 07, 1940 | E.J. Dillman | Control Device |
