| All Patents in class 72/421 |
Patents 1 -
14
of 14
      |
| Number | Date | Patentee | Title | Type |
| 9,666X | May 17, 1836 | J. Rouse | Butt hinges | |
| 383,142 | May 22, 1888 | C. Nobs | Apparatus for Tapering Metallic Blanks | forging dies |
| 418,631 | Dec. 31, 1889 | A. Weed | Forming articles of metal | forging machines |
| 777,626 | Dec. 13, 1904 | H.E. Grabau | Machine for Beating Leaf Metal | power hammers |
| 933,783 | Sep. 14, 1909 | G. Peiseler | Forging Machine | forging machines |
| 1,791,505 | Feb. 10, 1931 | C. Knoth | Riveting Machine | riveting machines |
| 1,938,761 | Dec. 12, 1933 | H. Fritschi | Machine Tool | metal straightening machines |
| 2,453,868 | Nov. 16, 1948 | R.M. Shaw, Jr. | Apparatus for Automatically Bending Work Such as Tubing Into Serpentine Coils | metal bending machines |
| 3,282,079 | Nov. 01, 1966 | A.R. Kull | Work Handling Mechanism for Forging Presses and the Like | workpiece changers and storage mechanisms |
| 3,283,551 | Nov. 08, 1966 | R.H. Armbruster, D.H. Kraft | Automatic feed mechanism for a press | metalworking presses |
| 3,412,595 | Nov. 26, 1968 | A.R. Kull | Stock Transfer Mechanism | workpiece changers and storage mechanisms |
| 3,914,977 | Oct. 28, 1975 | D.J. Rimmer | Presses and the Like | metalworking presses |
| 4,879,894 | Nov. 14, 1989 | J.K. Forlow, R.J. Benedict | Press with Movable Workpiece Support Carrier | punch presses |
| 6,532,649 | Mar. 18, 2003 | B.M. Campbell, H.P. Sablowski | Crimping machine | |
