| Patents Granted on 1940-07-30 |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 2,209,307 | Jul. 30, 1940 | A.H. Dall, F. Esz | Surface Finishing Machine | grinding machines |
| 2,209,379 | Jul. 30, 1940 | M.A. Bell | Clamping device | clamps |
| 2,209,469 | Jul. 30, 1940 | E.G. Roehm, L.F. Nenninger | Operating Control Mechanism for Milling Machines | milling machines |
| 2,209,484 | Jul. 30, 1940 | H.E. Tautz | Variable speed mechanism | drill press speed change mechanisms |
| 2,209,558 | Jul. 30, 1940 | O. Block, J. Bing | Magnetic clamping appliance | surface gauges |
| 2,209,562 | Jul. 30, 1940 | J.C. Drader | Worm Element Lapping Machine | gear lapping machines |
| 2,209,656 | Jul. 30, 1940 | A.W. Mall | Vibrator | |
| 2,209,767 | Jul. 30, 1940 | E.J. Dillman | Thermostat | thermostats |
| 2,209,768 | Jul. 30, 1940 | E.J. Dillman | Thermostat | thermostats |
| 2,209,938 | Jul. 30, 1940 | L.L. Schauer | Lubricating means | radial drill presses |
| 2,209,939 | Jul. 30, 1940 | L.L. Schauer | Automatically controlled gravity oiler | metalworking machine lubrication |
