| All Patents in class 82/106 |
Patents 91 -
105
of 125
      |
| Number | Date | Patentee | Title | Type |
| 2,264,458 | Dec. 02, 1941 | H.J. Siekmann | Vertical Crank Pin Lathe | crank pin lathes |
| 2,267,696 | Dec. 23, 1941 | H.J. Siekmann, W.F. Groene | Blacklash Eliminator for Orbital Lathes | metalworking machine mechanisms |
| 2,268,200 | Dec. 30, 1941 | W.F. Groene | Crank Shaft Lathe | crankshaft lathes |
| 2,269,368 | Jan. 06, 1942 | H.J. Siekmann, W.F. Groene | Hydraulic Feeding Mechanism | metalworking machine mechanisms |
| 2,269,908 | Jan. 13, 1942 | H.J. Siekmann, W.F. Groene | Multiple Spindle Indexing Crankshaft Lathe | crankshaft lathes |
| 2,280,229 | Apr. 21, 1942 | H.J. Siekmann, W.F. Groene | Multiple Spindle Broaching Lathe | crankshaft lathes |
| 2,280,230 | Apr. 21, 1942 | W.L. Groene | Crankshaft Broaching Lathe | metalworking machine mechanisms |
| 2,285,771 | Jun. 09, 1942 | W.F. Groene | Tool Holder for Lathes | lathe tool holders and tool posts |
| 2,291,035 | Jul. 28, 1942 | W.L. Groene | Multiple Spindle Indexing Crank Pin Lathe | crank pin lathes |
| RE22,174 | Sep. 08, 1942 | W.F. Groene, W.R. Meyer | Broaching Lathe | metal lathes |
| 2,299,976 | Oct. 27, 1942 | W.L. Groene | Orbital lathe feed mechanism | crank pin lathes |
| 2,310,691 | Feb. 09, 1943 | W.F. Groene | Tool Holder for Lathes | metalworking machine mechanisms |
| 2,356,997 | Aug. 29, 1944 | W.F. Groene | Tool Feeding Mechanism | metalworking machine mechanisms |
| RE22,621 | Mar. 20, 1945 | W.R. Meyer, W.F. Groene | Loading and Unloadng of Work in Machine Tools | metalworking machine mechanisms |
| 2,421,147 | May 27, 1947 | W.F. Groene | Orbital lathe feed mechanism | crankshaft lathes |
