| All Patents in class 409/129 |
Patents 1 -
15
of 29
      |
| Number | Date | Patentee | Title | Type |
| 1,959,178 | May 15, 1934 | B. Sassen | Tracer Control Mechanism | machine tool controls |
| 1,997,890 | Apr. 16, 1935 | E.L. Wall | Universal Tracer | hydraulic apparatus |
| 2,332,533 | Oct. 26, 1943 | E.G. Roehm | Tracer Mechanism | profiling machines |
| 2,434,853 | Jan. 20, 1948 | C. Johnson | Machine tool control | milling machine accessories |
| 2,436,373 | Feb. 24, 1948 | F.A. Barnes | Machine tool control | milling machine accessories |
| 2,456,158 | Dec. 14, 1948 | W.L. Tancred | Tracer and Automatic Pattern Feed | form producing lathes |
| 2,473,572 | Jun. 21, 1949 | E.A. Ruchty, N.D. Cooper | Magnetic Servo Operator | metalworking machine mechanisms |
| 2,486,097 | Oct. 25, 1949 | F.A. Barnes | Control system | milling machine accessories |
| 2,516,495 | Jul. 25, 1950 | A.P. Waterson | Hydraulic tool control unit | metal lathe accessories and attachments |
| 2,562,284 | Jul. 31, 1951 | W.L. Tancred | Tracer Mechanism | metalworking machine mechanisms |
| 2,586,654 | Feb. 19, 1952 | W.G. Hoelscher | Tracer Control Valve | tracer controlled lathes |
| 2,612,184 | Sep. 30, 1952 | W.I. Evans | Sensitive Hydraulic Tracer Valve | hydraulic apparatus |
| 2,618,244 | Nov. 18, 1952 | E.G. Roehm | Pilot Valve Controlled Tracer Valve | hydraulic apparatus |
| 2,622,489 | Dec. 23, 1952 | E.G. Roehm | Tracer Control Mechanism | milling machines |
| 2,675,743 | Apr. 20, 1954 | L.E. Mehlhope, M. Martellotti | Contour Milling Machine | milling machines |
