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