| All Patents in class 409/228 |
Patents 16 -
30
of 53
      |
| Number | Date | Patentee | Title | Type |
| 1,710,913 | Apr. 30, 1929 | J.B. Armitage | Machine Tool Organization | milling machines |
| 1,729,286 | Sep. 24, 1929 | J.B. Elfring | Adjustable Spacing Collar for Milling Cutters | milling machines |
| 1,801,686 | Apr. 21, 1931 | E.J. Kearney, J.B. Armitage, F.A. Parsons | Machine-Tool Organization | milling machines |
| 1,904,971 | Apr. 18, 1933 | L.F. Nenninger, H. Ernst | Milling Machine | milling machines |
| 1,914,167 | Jun. 13, 1933 | W.D. Archea, M. Romaine | Milling Machine | milling machines |
| 1,938,661 | Dec. 12, 1933 | E.J. Kearney | Knee Type Milling Machine | milling machines |
| 1,957,310 | May 01, 1934 | J.B. Armitage | Machine Tool Transmission and Control | milling machines |
| 1,965,253 | Jul. 03, 1934 | L.F. Nenninger | Variable Speed Transmission for Machine Tools | metalworking variable speed mechanisms |
| 1,968,276 | Jul. 31, 1934 | J.B. Armitage | Milling Machine Transmission and Control | milling machines |
| 1,976,136 | Oct. 09, 1934 | L.D. Nenninger | Milling Machine | milling machines |
| 1,976,381 | Oct. 09, 1934 | J.B. Armitage | Milling Machine Transmission and Control | milling machines |
| 1,978,347 | Oct. 23, 1934 | W.D. Archea, F.V. Geier | Profiling Machine | milling machines |
| 1,982,265 | Nov. 27, 1934 | L.F. Nenninger | Spindle Mounting | metalworking machine mechanisms |
| 2,010,556 | Aug. 06, 1935 | L.F. Nenninger, F.A. Hassman | Transmission and control mechanism for milling machines | milling machines |
| 2,033,749 | Mar. 10, 1936 | J.M. Walter | Milling machine head | milling machines |
