| All Patents in class 83/637 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 2,823,960 | Feb. 18, 1958 | W.J. Blazek, J.J. Strnad | Die sets for machine presses | dies for punch presses |
| 3,062,083 | Nov. 06, 1962 | J.J. Strnad | Interchangeable die sets | dies for punch presses |
| 3,386,781 | Jun. 04, 1968 | W.J. Blazek, C.D. Hillis | Die set having readily demountable guide pins and bushings | dies for punch presses |
| 3,452,633 | Jul. 01, 1969 | E.J. Hammon | Die set shank construction | dies for punch presses |
| 3,496,824 | Feb. 24, 1970 | C.R. Barkley | Composite shank for die sets | dies for punch presses |
| 3,748,941 | Jul. 31, 1973 | R.E. Richards | Guide pin assembly for die plate | tool and die maker |
