| All Patents in class 74/333 |
Patents 121 -
135
of 190
      |
| Number | Date | Patentee | Title | Type |
| 1,765,592 | Jun. 24, 1930 | H.E. Darby, D.C. Klausmeyer | Single Lever Eight-Speed Shift Mechanism | metalworking speed changing mechanisms |
| 1,812,871 | Jul. 07, 1931 | B.P. Graves | Variable Speed Controller Mechanism | machine tool controls |
| 1,825,719 | Oct. 06, 1931 | S. Einstein | Control Mechanism | machine tool controls |
| 1,850,302 | Mar. 22, 1932 | W.G. Hoelscher | Transmission | metal lathe mechanisms |
| 1,857,162 | May 10, 1932 | L.F. Nenninger | Milling Machinery | milling machines |
| 1,859,242 | May 17, 1932 | L.F. Nenninger | Transmission and Control Mechanism | milling machines |
| 1,899,201 | Feb. 28, 1933 | D.C. Klausmeyer | Internal gear drive | drill presses |
| 1,904,971 | Apr. 18, 1933 | L.F. Nenninger, H. Ernst | Milling Machine | milling machines |
| 1,938,661 | Dec. 12, 1933 | E.J. Kearney | Knee Type Milling Machine | milling machines |
| 1,938,779 | Dec. 12, 1933 | L.F. Nenninger | Transmission and Control Mechanism for a Milling Machine | milling machines |
| 1,938,780 | Dec. 12, 1933 | B. Sassen, L.F. Nenninger | Power Operated Clutch for Machine Tools | metalworking power transmission |
| 1,938,781 | Dec. 12, 1933 | B. Sassen, L.F. Nenninger | Milling Machine | milling machines |
| 1,947,862 | Feb. 20, 1934 | H.N. Stephan, H.M. Lucas | Special High Speed Drive for the Spindle of Boring Machine and Other Machine Tools | horizontal boring mills |
| 1,957,310 | May 01, 1934 | J.B. Armitage | Machine Tool Transmission and Control | milling machines |
| 1,976,139 | Oct. 09, 1934 | B. Sassen, L.F. Nenninger | Milling Machine | milling machines |
