| Patents Granted on 1931-06-23 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| CA-312,609 | Jun. 23, 1931 | F.A. Parsons | Milling machine | milling machines |
| 1,810,996 | Jun. 23, 1931 | E.W. Zeh | Screw power press | punch presses |
| 1,811,037 | Jun. 23, 1931 | F.O. Albertson, G. Olsen | Abrasive disk | handheld power sanders |
| 1,811,066 | Jun. 23, 1931 | C.E. Tannewitz | Sawing machine | tablesaws |
| 1,811,137 | Jun. 23, 1931 | W.C. Kress | Socket Wrench | socket wrenches |
| 1,811,175 | Jun. 23, 1931 | F.V. Donald | Ground cultivating machine | |
| 1,811,452 | Jun. 23, 1931 | J.E. Blalock | Pipe Wrench | pipe wrenches |
| 1,811,577 | Jun. 23, 1931 | J.M. Crowe | Hand tool | handheld circular saws |
| 1,811,596 | Jun. 23, 1931 | C.D. Salisbury | Injection Valve Means for Hydrocarbon Motors | fuel systems |
