| Patents for Robert H. Eisengrein |
Patents 1 -
5
of 5
      |
| Picture | Number | Date | Patentee | Title |
| | 2,785,318 | Mar. 12, 1957 | R.H. Eisengrein, E.W. Erikson | Automatic paralleling circuit |
| | 2,832,197 | Apr. 29, 1958 | R.H. Eisengrein, G.H. Hermanson, C.L. Sadler | Pressure regulating apparatus for a hydraulic control system |
| | 2,832,894 | Apr. 29, 1958 | R.H. Eisengrein, R.J. W, D.A. Straznickas | Automatic machine |
| | 2,885,566 | May 05, 1959 | R.H. Eisengrein, G.G. Hermanson, C.L. Sadler | Control means |
| | 3,136,936 | Jun. 09, 1964 | R.H. Eisengrein | Machine Tool Control System |
