| Patents Granted on 1940-04-23 |
Patents 1 -
5
of 5
      |
| Number | Date | Patentee | Title | Type |
| RE21,434 | Apr. 23, 1940 | J.B. Armitage, W.M. Pohl | Machine Tool Transmission and Control | metalworking machine mechanisms |
| 2,197,893 | Apr. 23, 1940 | W.F. Groene, R.K. Blond | Lathe headstock | metal lathe mechanisms |
| 2,197,906 | Apr. 23, 1940 | W.C. Tucker | Method and machine for forming metal | |
| 2,198,070 | Apr. 23, 1940 | D.D. Wile | Pressure Valve | valves |
| 2,198,090 | Apr. 23, 1940 | W.F. Groene, H.C. Pierle | Taper Attachment for Lathes | metal lathe accessories and attachments |
