| Patents Granted on 1921-12-13 |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 1,399,786 | Dec. 13, 1921 | J.E. Messenger | Bench Vise Base | |
| 1,399,969 | Dec. 13, 1921 | A.S. Kurkjian | Combination handwheel and faceplate for lathes | wood lathe accessories |
| 1,400,063 | Dec. 13, 1921 | T. Hinton | Tool Holder | drilling and boring tool holders |
| 1,400,064 | Dec. 13, 1921 | A. Holmberg | Portable power-driven crosscut-saw | handheld circular saws |
| 1,400,166 | Dec. 13, 1921 | E.F. Karlson | Power Hammer | power hammers |
| 1,400,226 | Dec. 13, 1921 | H.R. Milan | Wrench | automotive specialty wrenches |
| 1,400,277 | Dec. 13, 1921 | W.F. Folmer | Aviator's Camera | cameras |
| 1,400,282 | Dec. 13, 1921 | P.W. Gates | Molding-machine | ore processing apparatus |
| 1,400,328 | Dec. 13, 1921 | C.G. Sprado | Internal Combustion Engine | |
| 1,400,382 | Dec. 13, 1921 | C.B. Simmons | Folding Drawing-Knife | draw knives |
| 1,400,496 | Dec. 13, 1921 | J.D. Bobbroff | Power-saw | handheld circular saws |
