| All Patents of Type: crankshaft lathes |
Patents 1 -
15
of 93
      |
| Number | Date | Patentee | Title | Type |
| 1,528,972 | Mar. 10, 1925 | W.F. Groene | Lathe of the Type Generally Referred to as Crank Shaft Lathe | crankshaft lathes |
| 1,633,633 | Jun. 28, 1927 | W.F. Groene | Crank Shaft Lathes | crankshaft lathes |
| 1,664,622 | Apr. 03, 1928 | W.F. Groene | Crank Shaft Lathe Chuck | metal lathe chucks |
| 1,700,721 | Jan. 29, 1929 | W.F. Groene | Center Drive Lathe | crankshaft lathes |
| 1,723,347 | Aug. 06, 1929 | W.F. Groene | Chucking Device for Crank Shafts | metal lathe chucks |
| 1,744,885 | Jan. 28, 1930 | H.J. Siekmann, W.F. Groene | Machine Tool | machine tool controls |
| 1,843,359 | Feb. 02, 1932 | W.F. Groene | Double Center Drive Crank Shaft Lathe | crankshaft lathes |
| 1,878,131 | Sep. 20, 1932 | W.F. Groene | Crank Shaft Lathe | crankshaft lathes |
| RE18,662 | Nov. 22, 1932 | H.J. Siekmann, W.F. Groene | Machine Tool | machine tool controls |
| 1,906,577 | May 02, 1933 | W.F. Groene | Steady Rest for Crank Shaft Lathes | machine mechanisms |
| 1,921,919 | Aug. 08, 1933 | W.F. Groene | Orbital Lathe | crankshaft 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 | machine mechanisms |
| 1,993,994 | Mar. 12, 1935 | H.J. Siekmann, W.F. Groene | Orbital Lathe | machine mechanisms |
| 1,993,995 | Mar. 12, 1935 | H.J. Siekmann, W.F. Groene | Orbital Lathe | machine mechanisms |
