| Patents for William D. Zettler |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 2,924,152 | Feb. 09, 1960 | W.D. Zettler | Drawbolt for Machine Tools | metalworking machine mechanisms |
| 3,198,078 | Aug. 03, 1965 | W.D. Zettler, G.H. Schurger | Machine Tool Control Center | machine tool controls |
| 3,232,143 | Feb. 01, 1966 | W.D. Zettler, G.h. Schurger | Control for Machine Tools | machine tool controls |
| 3,688,387 | Sep. 05, 1972 | W.D. Zettler | Shuttle Type Automatic Tool Changer | tool changers and storage mechanisms |
| 3,818,797 | Jun. 25, 1974 | W.D. Zettler | Drawbolt for Machine Tool Spindles | metalworking machine mechanisms |
| 3,824,890 | Jul. 23, 1974 | E.E. Johnson, W.D. Zettler | Chip Guard for Machine Tools | metalworking machine mechanisms |
| 4,141,134 | Feb. 27, 1979 | E.F. Woytych, W.D. Zettler, F.L. Schmidt, D.J. Seicher | Tool Changer Attachment for Multi Function Machine Tools | tool changers and storage mechanisms |
