| Patents Granted on 1931-10-20 |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 1,827,763 | Oct. 20, 1931 | J.S. Richardson | Turning machine chuck | wood lathe chucks |
| 1,827,968 | Oct. 20, 1931 | W.L. Bryant | Wheelhead and the like | grinders |
| 1,828,043 | Oct. 20, 1931 | T.L. Hedgpeth | Adjustable support for portable power saws | radial arm saws |
| 1,828,142 | Oct. 20, 1931 | G.H. Herdman | Combination Drift Pin and Wrench | wrench handle components |
| 1,828,173 | Oct. 20, 1931 | F.J. Carnelli | Chain Pipe Wrench | chain and strap wrenches |
| 1,828,311 | Oct. 20, 1931 | T. Bink | Supporting base for stools | |
| 1,828,387 | Oct. 20, 1931 | C. Booth | Grinding Machine | grinding machines |
| 1,828,401 | Oct. 20, 1931 | H.A. Farrand | Resilient rule | tape measures |
| 1,828,434 | Oct. 20, 1931 | A.B. Odell | Combined table and truck | dollies, carts and hand trucks |
| 1,828,516 | Oct. 20, 1931 | A. Hormel, C. Wagner | Drying apparatus for plates of metal and other material | |
| 1,828,540 | Oct. 20, 1931 | W.A. Marschke | Buffer or grinder | |
| 1,828,633 | Oct. 20, 1931 | C.D. Allen, F.W. Walch, B.T. Williston | Injector for Feeding Water to Steam Boilers | water injectors |
| 1,828,724 | Oct. 20, 1931 | N.S. Yost | Alternating current motor | capacitor start induction motors |
