| All Patents in class 83/685 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 369,872 | Sep. 13, 1887 | N.E. Burns, L. Olsen | Compound Metal Working Machine | punch presses |
| 826,130 | Jul. 17, 1906 | L.H. Vold | Swivel Punch Holder | metal punching machines |
| 1,035,095 | Aug. 06, 1912 | H.B. Kraut | Punching Machine | metal punching machines |
| 1,068,344 | Jul. 22, 1913 | L.D. Jannell | Punching and shearing machine | metal punching machines |
| 1,721,182 | Jul. 16, 1929 | J. Jensen | Angle Iron Shear | metal shearing machines |
| 2,073,893 | Mar. 16, 1937 | L.A. Wilkie | Apparatus for stamping and punching sheet metal and the like | stamping presses |
| 3,698,274 | Oct. 17, 1972 | B.J. Miller, E.I. Coulon, D.C. Mohr | Apparatus for Piercing Openings in Tubing | pipe and tube notchers |
