| Patents for John L. Martin |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 2,816,487 | Dec. 17, 1957 | J.L. Martin, H.L. Heywood, J.B. Armitage | Milling Machine | milling machines |
| 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-634,743 | Jan. 16, 1962 | J.G. Osburn, O.W. Barker, J.L. Martin, F. Zankl | Transmission and control mechanism | milling machines |
| 3,458,881 | Aug. 05, 1969 | J.L. Martin, E.F. Drechsler | Machine Tool Variable Power Transmission | milling machines |
| 3,477,121 | Nov. 11, 1969 | J.L. Martin | Machining Center with Dual Function Tool Operator | milling machines |
| CA-873,071 | Jun. 15, 1971 | J.L. Martin | Machining center with dual function tool operator | boring and turning machines |
