| All Patents in class 82/106 |
Patents 46 -
60
of 125
      |
| Number | Date | Patentee | Title | Type |
| RE18,662 | Nov. 22, 1932 | H.J. Siekmann, W.F. Groene | Machine Tool | machine tool controls |
| 1,921,919 | Aug. 08, 1933 | W.F. Groene | Orbital Lathe | crankshaft lathes |
| 1,932,993 | Oct. 31, 1933 | H.K. Tegarden | Grinding Machine | grinding machines |
| 1,934,530 | Nov. 07, 1933 | W.F. Groene | Machine Tool | crank pin lathes |
| 1,934,976 | Nov. 14, 1933 | G.W. Luning, W.F. Groene | Crank Shaft Lathe | crankshaft lathes |
| 1,938,696 | Dec. 12, 1933 | W.F. Groene | Machine Tool | metalworking machine mechanisms |
| 1,993,994 | Mar. 12, 1935 | H.J. Siekmann, W.F. Groene | Orbital Lathe | metalworking machine mechanisms |
| 1,993,995 | Mar. 12, 1935 | H.J. Siekmann, W.F. Groene | Orbital Lathe | metalworking machine mechanisms |
| RE19,730 | Oct. 22, 1935 | W.F. Groene | Chucking Device | metal lathe chucks |
| 2,030,020 | Feb. 04, 1936 | W.R. Meyer, W.F. Groene | Chuck | metal lathe chucks |
| 2,030,142 | Feb. 11, 1936 | G.W. Luning, W.F. Groene | Chuck | metal lathe chucks |
| RE19,905 | Mar. 31, 1936 | G.W. Luning, W.F. Groene | Crank Shaft Lathe | crankshaft lathes |
| 2,042,123 | May 26, 1936 | H.C. Pierle | Loading and Unloadng of Work in Machine Tools | metalworking machine mechanisms |
| RE20,090 | Sep. 01, 1936 | W.F. Groene | Double Center Drive Crank Shaft Lathe | crankshaft lathes |
| 2,069,107 | Jan. 26, 1937 | G.W. Luning, W.R. Meyer, W.F. Groene | Machine Tool | crankshaft lathes |
