| Patents for Willard L. Groene |
Patents 16 -
28
of 28
      |
| Number | Date | Patentee | Title | Type |
| 2,277,432 | Mar. 24, 1942 | W.L. Groene | Speed changing mechanism | |
| 2,278,988 | Apr. 07, 1942 | W.L. Groene | Boring Tool Holder | lathe tool holders and tool posts |
| 2,280,230 | Apr. 21, 1942 | W.L. Groene | Crankshaft Broaching Lathe | metalworking machine mechanisms |
| 2,282,720 | May 12, 1942 | W.L. Groene | Crankshaft Broaching Lathe | metalworking machine mechanisms |
| 2,291,035 | Jul. 28, 1942 | W.L. Groene | Multiple Spindle Indexing Crank Pin Lathe | crank pin lathes |
| 2,299,975 | Oct. 27, 1942 | W.L. Groene | Crankshaft Chucking Mechanism | metal lathe chucks |
| 2,299,976 | Oct. 27, 1942 | W.L. Groene | Orbital lathe feed mechanism | crank pin lathes |
| 2,306,695 | Dec. 29, 1942 | W.L. Groene | Lathe Headstock Transmission | metalworking machine mechanisms |
| 2,315,476 | Mar. 30, 1943 | W.L. Groene | Broaching Machine | broaching machines |
| 2,317,854 | Apr. 27, 1943 | W.L. Groene | Friction transmission gearing | metal lathe mechanisms |
| 2,333,859 | Nov. 09, 1943 | W.L. Groene | Crankshaft Blank | crankshafts |
| 2,347,259 | Apr. 25, 1944 | W.L. Groene | Lathe Headstock Transmission | metalworking machine mechanisms |
| 2,553,966 | May 22, 1951 | W.L. Groene | Method of broaching rotating work | broaching machines |
