| All Patents in class 409/237 |
Patents 31 -
36
of 36
      |
| Number | Date | Patentee | Title | Type |
| 2,983,199 | May 09, 1961 | J. Daugherty | Machine Tool Counter Balance | metalworking machine mechanisms |
| 3,010,713 | Nov. 28, 1961 | B.F. Turkovich | Counterbalance | milling machines |
| 3,018,697 | Jan. 30, 1962 | W. Schroeder, A.H. Dall | Counterbalance control device | milling machines |
| 3,344,713 | Oct. 03, 1967 | F. Zankl | Drive Mechanism for Actuating a Movable Machine Member | milling machines |
| 3,988,965 | Nov. 02, 1976 | R.V. Fatke, O.W. Ehrhardt, D.J. Cayen | Two Pressure Counterbalance System for Machine Tool Headstocks | metalworking machine mechanisms |
| 4,149,822 | Apr. 17, 1979 | R.A. Lehmkuhl | Headstock Balancing Arrangement for Machine Tools | horizontal boring mills |
