| Patents Granted on 1931-10-13 |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 1,826,739 | Oct. 13, 1931 | W.F. Costello | Tool Set and Container Therefor | wrench set holders |
| 1,826,937 | Oct. 13, 1931 | J. Jensen | Anchoring means for portable supports | industrial machine bases |
| 1,826,983 | Oct. 13, 1931 | R.H. Beebe | Jig-saw | scrollsaws |
| 1,827,055 | Oct. 13, 1931 | H.M. Whitcomb | Doorstop | |
| 1,827,202 | Oct. 13, 1931 | W.F. Klein | Ratchet Wrench | ratchet wrenches |
| 1,827,245 | Oct. 13, 1931 | C.C. Peck, J.F. Lincoln | Arc Welding | welding machines |
| 1,827,269 | Oct. 13, 1931 | G.E. Smith | Tool driving apparatus | handheld power tools |
| 1,827,270 | Oct. 13, 1931 | G.E. Smith | Grinding wheel guard | bench or pedestal grinders |
| 1,827,323 | Oct. 13, 1931 | T.G. Louis | Magneto | ignition systems |
| 1,827,387 | Oct. 13, 1931 | G.J. Evelo | Chuck | metal lathe chucks |
| 1,827,510 | Oct. 13, 1931 | W.H. Evans | Valve seat reamer | valve and seat maintenance |
| 1,827,511 | Oct. 13, 1931 | W.H. Evans | Reamer | valve and seat maintenance |
