| All Patents in class 72/400 |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 59,940 | Nov. 27, 1866 | J.G. Alleyne | Forging Apparatus | steam hammers |
| 78,230 | May 26, 1868 | J. Palmer | Elliptic Spring | forging dies |
| 229,198 | Jun. 22, 1880 | C.F. Steinway | Screw-clamp for wood-bending machines | music instrument maker |
| 322,930 | Jul. 28, 1885 | H. Hammond | Forging Hammer | power hammers |
| 634,284 | Oct. 03, 1899 | E.G. Budd | Die for forming sheet-metal pulley-rims | industrial machine pulleys and belt drive mechanisms |
| 1,080,309 | Dec. 02, 1913 | W. Vollmer | Metal Bending Machine | metal bending machines |
| 3,130,611 | Apr. 28, 1964 | O.A. Specht | Swaging Machine | metal swaging machines |
| 3,260,091 | Jul. 12, 1966 | R.M. Shaw, Jr. | Bending Machine | metal bending machines |
