| Patents for Frank Zankl |
Patents 31 -
45
of 58
      |
| Number | Date | Patentee | Title | Type |
| 3,760,491 | Sep. 25, 1973 | E.R. Lohneis, F. Zankl | Tool Change Mechanism | milling machines |
| 3,856,114 | Dec. 24, 1974 | F. Zankl | Automatic Lubrication System | metalworking machine lubrication |
| 3,878,445 | Apr. 15, 1975 | J.J. Schachte, R. Stobbe, F. Zankl, E.E. Kirkham | A.C. Motor Control Apparatus and Method (CNC Control Circuitry) | machine tool controls |
| CA-969,748 | Jun. 24, 1975 | E.R. Lohneis, F. Zankl | Tool change mechanism | tool changers and storage mechanisms |
| CA-977,535 | Nov. 11, 1975 | E.R. Lohneis, F. Zankl | Tool storage magazine | tool changers and storage mechanisms |
| 3,986,087 | Oct. 12, 1976 | J.J. Schachte, R.E. Stobbe, E.E. Kirkham, F. Zankl | A.C. Motor Control Apparatus and Method (CNC Control Circuitry) | tool changers and storage mechanisms |
| 3,986,088 | Oct. 12, 1976 | J.J. Schachte, R.E. Stobbe, E.E. Kirkham, F. Zankl | A.C. Motor Control Apparatus and Method (CNC Control Circuitry) | machine tool controls |
| CA-1,000,836 | Nov. 30, 1976 | F. Zankl | Automatic lubrication system | metalworking machine lubrication |
| D244,445 | May 24, 1977 | E.R. Lohneis, F. Zankl, C.B. Stevens, T.J. Green | Machine tool | milling machines |
| 4,028,599 | Jun. 07, 1977 | F. Zankl, E.E. Kirkham, R.E. Stobbe, J.J. Schachte | Method of Controlling an A.C. Motor | machine tool controls |
| CA-1,014,603 | Jul. 26, 1977 | E.E. Kirkham, J.J. Schachte, F. Zankl, R.E. Stobbe | A.C. motor control apparatus and method | motor controls |
| CA-1,019,390 | Oct. 18, 1977 | E.E. Kirkham, J.J. Schachte, F. Zankl, R.E. Stobbe | Method of controlling an A.C. motor | motor controls |
| CA-1,019,391 | Oct. 18, 1977 | J.J. Schachte, F. Zankl, R.E. Stobbe, E.E. Kirkham | A.C. motor control apparatus and method | motor controls |
| CA-1,021,843 | Nov. 29, 1977 | E.E. Kirkham, J.J. Schachte, F. Zankl, R.E. Stobbe | A.C. motor control apparatus and method | motor controls |
| CA-1,023,427 | Dec. 27, 1977 | E.E. Kirkham, J.J. Schachte, F. Zankl, R.E. Stobbe | A.C. motor control apparatus and method | motor controls |
