| All Patents in class 409/273 |
Patents 1 -
8
of 8
      |
| Picture | Number | Date | Patentee | Title |
| | 2,024,254 | Dec. 17, 1935 | E.G. Roehm, M. Romaine | Broaching Machine |
| | 2,049,623 | Aug. 04, 1936 | E.G. Roehm | Broaching Machine |
| | 2,203,798 | Jun. 11, 1940 | M. Romaine | Broaching Machine |
| | 2,280,229 | Apr. 21, 1942 | H.J. Siekmann, W.F. Groene | Multiple Spindle Broaching Lathe |
| | 2,280,230 | Apr. 21, 1942 | W.L. Groene | Crankshaft Broaching Lathe |
| | 2,290,590 | Jul. 21, 1942 | W. Trible, A.H. Hawley, Sr. | Indexing Mechanism |
| | 2,308,689 | Jan. 19, 1943 | A.H. Hawley, Sr., E.D. Vancil | Broaching Machine |
 | 2,838,980 | Jun. 17, 1958 | W.F. Babcock | Continuous broaching machines |
