| Patents for R. K. LeBlond Machine Tool Co. | 
| Patents 16 - 
					30
					of 107 
       | 
| Number | Date | Patentee | Title | Type | 
| 1,300,163 | Apr. 08, 1919 | W.F. Groene | Means for attaching tools to spindles | milling machines | 
| 1,317,990 | Oct. 07, 1919 | W.L. Schellenbach | Milling-machine | milling machines | 
| 1,337,313 | Apr. 20, 1920 | W.F. Groene | Device for connecting tools to spindles | milling machines | 
| 1,361,792 | Dec. 07, 1920 | W.F. Groene | Tailstock | metal lathes | 
| 1,374,109 | Apr. 05, 1921 | H.C. Pierle | Change-of-speed mechanism | drill presses | 
| 1,416,016 | May 16, 1922 | W.F. Groene | Countershaft brake | metalworking machine mechanisms | 
| 1,416,017 | May 16, 1922 | W.F. Groene | Countershaft brake | metalworking machine mechanisms | 
| 1,442,659 | Jan. 16, 1923 | W.F. Groene | Milling Machine Spindle | milling machines | 
| 1,442,660 | Jan. 16, 1923 | W.F. Groene | Taper attachment for lathes | metal lathe accessories and attachments | 
| 1,477,480 | Dec. 11, 1923 | W.F. Groene | Combined power and hand operated feed mechanism | metal lathes | 
| 1,498,513 | Jun. 17, 1924 | W.F. Groene | Facing attachment for lathes | metal lathe accessories and attachments | 
| 1,528,973 | Mar. 10, 1925 | W.F. Groene | Combined brake and clutch device | metalworking machine clutches | 
| 1,528,974 | Mar. 10, 1925 | W.O. Strauss, W.E. Groene | Feeding device for printing presses | printing presses | 
| 1,596,827 | Aug. 17, 1926 | W.F. Groene | Relieving attachment for machine tools and the like | metal lathe accessories and attachments | 
| 1,609,021 | Nov. 30, 1926 | W.F. Groene | Lathe | metal lathes |