| All Patents in class 29/6.01 |
Patents 1 -
9
of 9
      |
| Picture | Number | Date | Patentee | Title |
| | 79,000 | Jun. 16, 1868 | G. Raft | Wrist-Pin Turner |
| | 1,108,954 | Sep. 01, 1914 | A.L. Warner | Crank Shaft Forging Apparatus |
 | 1,378,642 | May 17, 1921 | L.I. Yeomans | Process and machine for making crank-shafts for engines, compressors, and the like |
| | 2,243,379 | May 27, 1941 | G.H. Johnson | Machine Tool |
| | RE22,174 | Sep. 08, 1942 | W.R. Meyer, W.F. Groene | Broaching Lathe |
 | 2,330,968 | Oct. 05, 1943 | H.J. Siekmann, W.F. Groene | Multiple Spindle Broaching Lathe Indexing Mechanism |
| | 2,426,932 | Sep. 02, 1947 | L. Hornbostel | Rotary Tool Lathe |
| | 2,650,522 | Sep. 01, 1953 | L.E. Godfriaux | Turn Milling Lathe |
| | 2,807,973 | Oct. 01, 1957 | H.J. Siekmann, W.H. Meyer, administrator, W.R. Meyer, deceased (estate of) | Apparatus for Manufacturing Crankshafts Automatically |
