| All Patents in class 82/138 |
Patents 76 -
90
of 105
      |
| Number | Date | Patentee | Title | Type |
| 1,744,885 | Jan. 28, 1930 | H.J. Siekmann, W.F. Groene | Machine Tool | machine tool controls |
| 1,750,589 | Mar. 11, 1930 | W.F. Groene | Automatic Lathe Control | machine tool controls |
| 1,770,048 | Jul. 08, 1930 | G.D. Sundstrand | Automatic lathe | |
| 1,797,704 | Mar. 24, 1931 | E.J. Svenson | Feed mechanism for lathes | |
| 1,799,893 | Apr. 07, 1931 | F.S. Floeter | Tool holder for double-acting lathes | crankshaft lathes |
| 1,815,012 | Jul. 14, 1931 | W.L. Schellenbach | Tool attachments for lathes | metal lathe accessories and attachments |
| 1,818,128 | Aug. 11, 1931 | W.F. Groene | Automatic lathe | automatic lathes |
| 1,857,208 | May 10, 1932 | H.R. Metz | Chamfering Tool and Holder | pipe threading machines |
| 1,883,082 | Oct. 18, 1932 | J.F. Benner, P. Sundstrand | Lathe | |
| 1,918,331 | Jul. 18, 1933 | A.W. Aufderhar, W.F. Groene | Combined Eccentric and Concentric Turning Apparatus | metal lathes |
| 1,963,023 | Jun. 12, 1934 | W. Libby | Automatic Tool | lathe tools |
| 1,964,937 | Jul. 03, 1934 | L.A. Dumser, C.J. Schroeder | Machine tool | |
| 1,976,072 | Oct. 09, 1934 | W.F. Howard | Method and Means for Preventing Chattering of Slender Work | metal lathe accessories and attachments |
| 2,144,735 | Jan. 24, 1939 | B. Granberg, J.B. Sinderson | Machine tool | |
| 2,160,858 | Jun. 06, 1939 | B.R. Granberg | Machine tool | |
