| Patents Granted on 1931-12-22 |
Patents 1 -
14
of 14
      |
| Number | Date | Patentee | Title | Type |
| D85,817 | Dec. 22, 1931 | H.L. Chapin, W.F. Folmer | Electric Lamp and High Tension Insect Destoyer | insect exterminators |
| D85,847 | Dec. 22, 1931 | H.E. Tautz | Design for a scroll saw | scrollsaws |
| GB-363,650 | Dec. 22, 1931 | n. listed | Improvements in or Relating to Centreless Grinding Machines | grinding machines |
| 1,837,341 | Dec. 22, 1931 | L.S. Shaffer | Digging Tooth | |
| 1,837,530 | Dec. 22, 1931 | J.D. Cole | Exerciser mechanism | exercise and sports equipment |
| 1,837,531 | Dec. 22, 1931 | J.D. Cole | Exercising device | exercise and sports equipment |
| 1,837,532 | Dec. 22, 1931 | J.D. Cole | Exerciser mechanism | exercise and sports equipment |
| 1,837,601 | Dec. 22, 1931 | L.C. Wetzel | Antifriction bearing | scales and balances |
| 1,837,617 | Dec. 22, 1931 | H.B. Greenwood | Bearing support for composition inking rollers | |
| 1,837,821 | Dec. 22, 1931 | H.W. Holmes | Centerless Grinding Machine | grinding machines |
| 1,837,943 | Dec. 22, 1931 | D.L. Blake | Multipurpose brace (long throw, short throw, angle brace.) | |
| 1,838,028 | Dec. 22, 1931 | L.F. Nenninger, H. Ernst | Deferred Action Reversing Mechanism | hydraulic apparatus |
| 1,838,047 | Dec. 22, 1931 | H.L. Zabriskie | Phonograph turntable mechanism | |
| 1,838,060 | Dec. 22, 1931 | W.J. Peets | Phonograph turntable mechanism | |
