| Patents for Frank Zankl |
Patents 1 -
15
of 58
      |
| Number | Date | Patentee | Title | Type |
| 2,764,067 | Sep. 25, 1956 | F. Zankl, J.B. Armitage | Machine Tool Transmission Mechanism | milling machines |
| 2,843,024 | Jul. 15, 1958 | G.G. Baumbach, F. Zankl, T.A. Wetzel, J.B. Armitage | Dual Transmission and Control Mechanism | milling machines |
| 2,925,018 | Feb. 16, 1960 | F. Zankl, J.G. Osburn, J.B. Lukey | Quill Retracting and Positioning Mechanism | milling machines |
| 2,959,976 | Nov. 15, 1960 | F. Zankl | Backlash Eliminator | metalworking machine mechanisms |
| 2,963,945 | Dec. 13, 1960 | F. Zankl, J.G. Osburn, J.L. Martin, O.W. Barker | Transmission and Control Mechanism | metalworking power transmission |
| CA-622,576 | Jun. 20, 1961 | F. Zankl, J.G. Osburn, J.B. Lukey | Quill retracting and positioning mechanism | milling machines |
| 2,988,965 | Jun. 20, 1961 | F. Zankl, G.G. Baumbach, T.A. Wetzel, J.B. Armitage | Spindle Construction and Dual Transmission Therefor | milling machines |
| CA-634,743 | Jan. 16, 1962 | F. Zankl, J.G. Osburn, O.W. Barker, J.L. Martin | Transmission and control mechanism | milling machines |
| 3,016,804 | Jan. 16, 1962 | J.G. Osburn, F. Zankl | Program Control System | milling machines |
| CA-681,147 | Mar. 03, 1964 | F. Zankl, J.G. Osburn | Program control system | milling machines |
| 3,163,087 | Dec. 29, 1964 | R.E. Stobbe, J.G. Osburn, J.E. Crowe, F. Zankl, G.R. Weber | Machine Tool Control System | milling machines |
| 3,176,530 | Apr. 06, 1965 | F. Zankl, R.E. Stobbe | Auto-Cycle Control System | milling machines |
| 3,218,706 | Nov. 23, 1965 | E.R. Lohneis, F. Zankl | Machine Tool with Tool Changer | milling machines |
| 3,220,274 | Nov. 30, 1965 | F. Zankl, R.E. Stobbe, J.G. Osburn | Automatic Cycle Control System | milling machines |
| 3,263,571 | Aug. 02, 1966 | F. Zankl | Counterbalance for a Machine Tool | milling machines |
