| Patents for Frank J. Schalk |
Patents 1 -
5
of 5
      |
| Number | Date | Patentee | Title | Type |
| 2,867,154 | Jan. 06, 1959 | F.J. Schalk, J.J. Lenert, M.L. Hutchens | Retracting Mechanism | milling machines |
| CA-609,503 | Nov. 29, 1960 | M.L. Hutchens, F.J. Schalk, J.J. Lenert | Retracting mechanism | milling machines |
| 3,029,710 | Apr. 17, 1962 | F.J. Schalk, W.P. Bartz, A.H. Fotsch | Machine Tool | milling machines |
| 3,796,163 | Mar. 12, 1974 | J.E. Schluge, R.K. Sedgwick, F.J. Schalk, R.E. Meyer | Manufacturing System | workpiece changers and storage mechanisms |
| CA-1,046,807 | Jan. 23, 1979 | E.J. Kielma, F.J. Schalk, K.J. Merkel | Machine tool with counterposed rotary toolheads carrying cross-feed tool slides | milling machines |
