| Patents for Frank Zankl |
Patents 1 -
10
of 58
      |
| Picture | Number | Date | Patentee | Title |
| | 2,764,067 | Sep. 25, 1956 | F. Zankl, J.B. Armitage | Machine Tool Transmission Mechanism |
| | 2,843,024 | Jul. 15, 1958 | G.G. Baumbach, F. Zankl, T.A. Wetzel, J.B. Armitage | Dual Transmission and Control Mechanism |
| | 2,925,018 | Feb. 16, 1960 | F. Zankl, J.G. Osburn, J.B. Lukey | Quill Retracting and Positioning Mechanism |
| | 2,959,976 | Nov. 15, 1960 | F. Zankl | Backlash Eliminator |
| | 2,963,945 | Dec. 13, 1960 | O.W. Barker, F. Zankl, J.G. Osburn, J.L. Martin | Transmission and Control Mechanism |
 | CA-622,576 | Jun. 20, 1961 | F. Zankl, J.G. Osburn, J.B. Lukey | Quill retracting and positioning mechanism |
| | 2,988,965 | Jun. 20, 1961 | F. Zankl, G.G. Baumbach, T.A. Wetzel, J.B. Armitage | Spindle Construction and Dual Transmission Therefor |
 | CA-634,743 | Jan. 16, 1962 | F. Zankl, J.G. Osburn, O.W. Barker, J.L. Martin | Transmission and control mechanism |
| | 3,016,804 | Jan. 16, 1962 | J.G. Osburn, F. Zankl | Program Control System |
 | CA-681,147 | Mar. 03, 1964 | F. Zankl, J.G. Osburn | Program control system |
