| All Patents in class 82/17 |
Patents 76 -
90
of 91
      |
| Number | Date | Patentee | Title | Type |
| 2,184,377 | Dec. 26, 1939 | C.A. Bickel | Taper Forming Machine | metal lathe accessories and attachments |
| 2,198,090 | Apr. 23, 1940 | W.F. Groene, H.C. Pierle | Taper Attachment for Lathes | metal lathe accessories and attachments |
| 2,208,319 | Jul. 16, 1940 | K.H. Wills, C.A. Bickel | Lathe | engine lathes |
| 2,211,723 | Aug. 13, 1940 | H.C. Kemper, W.F. Groene | Taper Turning Apparatus | metalworking machine mechanisms |
| 2,227,178 | Dec. 31, 1940 | F.E. Cheever | Taper Attachment for Lathes | metal lathe accessories and attachments |
| 2,250,633 | Jul. 29, 1941 | W.F. Groene, G.W. Luning | Taper attachment | metal lathe accessories and attachments |
| 2,257,503 | Sep. 30, 1941 | M.E. Lange, W.C. De Graff | Turning Tool | lathe tools |
| 2,299,677 | Oct. 20, 1942 | C.A. Bickel | Taper Attachment Construction | metal lathe accessories and attachments |
| 2,309,298 | Jan. 26, 1943 | C.A. Bickel | Taper Attachment Construction | metal lathe accessories and attachments |
| 2,311,203 | Feb. 16, 1943 | C.A. Bickel | Taper Attachment Construction | metal lathe accessories and attachments |
| 2,315,846 | Apr. 06, 1943 | F.A. Fritzsch | Taper Mechanism | metal lathe accessories and attachments |
| 2,325,678 | Aug. 03, 1943 | M.P. Holmes | Backlash Take-up for Cross Feed Screw and Taper Attachments | metal lathe accessories and attachments |
| 2,396,784 | Mar. 19, 1946 | A.W. Aufderhar, W.F. Groene | Multiple Spindle Center Drive Lathe Feed Mechanism | metalworking machine mechanisms |
| 2,410,026 | Oct. 29, 1946 | H.C. Kemper, W.F. Groene | Automatic Lathe | metalworking machine mechanisms |
| 2,540,520 | Feb. 06, 1951 | J.H. Hoern | Machine | horizontal drilling machines |
