| All Patents in class 409/129 |
Patents 1 -
10
of 29
      |
| Picture | Number | Date | Patentee | Title |
| | 1,959,178 | May 15, 1934 | B. Sassen | Tracer Control Mechanism |
| | 1,997,890 | Apr. 16, 1935 | E.L. Wall | Universal Tracer |
| | 2,332,533 | Oct. 26, 1943 | E.G. Roehm | Tracer Mechanism |
 | 2,434,853 | Jan. 20, 1948 | C. Johnson | Machine tool control |
 | 2,436,373 | Feb. 24, 1948 | F.A. Barnes | Machine tool control |
| | 2,456,158 | Dec. 14, 1948 | W.L. Tancred | Tracer and Automatic Pattern Feed |
| | 2,473,572 | Jun. 21, 1949 | E.A. Ruchty, N.D. Cooper | Magnetic Servo Operator |
 | 2,486,097 | Oct. 25, 1949 | F.A. Barnes | Control system |
 | 2,516,495 | Jul. 25, 1950 | A.P. Waterson | Hydraulic tool control unit |
| | 2,562,284 | Jul. 31, 1951 | W.L. Tancred | Tracer Mechanism |
