| Patents for Willard L. Groene |
Patents 1 -
15
of 28
      |
| Number | Date | Patentee | Title | Type |
| 2,126,462 | Aug. 09, 1938 | E.R. Shipley, W.L. Groene | Orbital Broaching Lathe | metalworking machine mechanisms |
| 2,173,608 | Sep. 19, 1939 | W.L. Groene | Change speed friction gearing | metalworking machine gearing |
| 2,174,083 | Sep. 26, 1939 | W.L. Groene | Crankshaft Lathe | metalworking machine mechanisms |
| 2,174,084 | Sep. 26, 1939 | W.L. Groene | Station Type Pin and Line Bearing Lathe | metalworking machine mechanisms |
| 2,186,168 | Jan. 09, 1940 | W.L. Groene, W.F. Groene | Feed Mechanism for Lathes | metalworking machine mechanisms |
| 2,199,834 | May 07, 1940 | W.L. Groene, W.F. Groene | Feed Mechanism for Lathes | metalworking machine mechanisms |
| 2,214,996 | Sep. 17, 1940 | W.F. Groene, W.L. Groene | Relieving attachment | metal lathe accessories and attachments |
| 2,232,228 | Feb. 18, 1941 | W.L. Groene | Crankpin grinder | crank pin lathes |
| 2,232,323 | Feb. 18, 1941 | W.L. Groene | Toolholder for lathes | crankshaft lathes |
| 2,235,450 | Mar. 18, 1941 | W.L. Groene | Crankshaft Blank | crankshafts |
| 2,249,242 | Jul. 15, 1941 | W.L. Groene | Method of Treating Crankshafts | crankshafts |
| 2,249,243 | Jul. 15, 1941 | W.L. Groene | Chucking Mechanism | metal lathe chucks |
| 2,250,632 | Jul. 29, 1941 | W.L. Groene | Hydraulic chucking mechanism | crankshaft lathes |
| 2,250,634 | Jul. 29, 1941 | W.L. Groene | Hydraulic Center Drive Chuck | metal lathe chucks |
| 2,273,258 | Feb. 17, 1942 | W.L. Groene | Boring Tool Holder | drilling and boring tool holders |
