| All Patents in class 91/374 |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
| | 1,234,882 | Jul. 31, 1917 | W.A. Doble | Speed Governor |
| | 2,101,644 | Dec. 07, 1937 | L.F. Nenninger, C. Herfurth, H. Ernst | Grinding Machine |
| | 2,101,712 | Dec. 07, 1937 | E.K. Johansen | Tracer Mechanism for Duplicating Machines |
 | 2,349,838 | May 30, 1944 | C. Granqvist, H.V. Alexandersson | Micrometer |
| | 2,383,429 | Aug. 21, 1945 | G.A. Wahlmark | Hydraulically operated control mechanism |
 | 2,412,957 | Dec. 24, 1946 | F.A. Barnes | Machine tool control |
| | 2,969,808 | Jan. 31, 1961 | H. Horlacher | Two-Stage Valve |
