| Patents Granted on 1921-04-?? |
Patents 1 -
15
of 35
      |
| Number | Date | Patentee | Title | Type |
| CA-210,179 | Apr. 05, 1921 | E.D. Woods | Wrench | wrench handle components |
| 1,373,621 | Apr. 05, 1921 | J.F. Lincoln | Safety Charging Device for Batteries | battery charging devices |
| 1,373,680 | Apr. 05, 1921 | J.L. Stanaland | Cane Mill | sugar cane apparatus |
| 1,373,683 | Apr. 05, 1921 | H.M. Svebelius | Plier Type Wrench | pliers |
| 1,373,789 | Apr. 05, 1921 | W.A. Barker | Revolving-jaw chuck | metal lathe chucks |
| 1,373,816 | Apr. 05, 1921 | C.J. Howard | Speed-Changing Mechanism for Metal-Working Machines | |
| 1,373,834 | Apr. 05, 1921 | J.F. Rogers | Tire Turning Tool | tire bending tools |
| 1,373,852 | Apr. 05, 1921 | C.J. Allen | Tractor | tractors |
| 1,373,926 | Apr. 05, 1921 | F. Wermes | Adjustable Tool Holder | lathe tool holders and tool posts |
| 1,374,109 | Apr. 05, 1921 | H.C. Pierle | Change-of-speed mechanism | drill presses |
| D57,548 | Apr. 12, 1921 | A.H. Starrett | Design for a prick-punch, nail-set, or article of similar nature | punches |
| 1,374,345 | Apr. 12, 1921 | H.H. Wolfe | Tension means for floor-surfacing machines | sanding machines |
| 1,374,513 | Apr. 12, 1921 | W.H. Townsend, J.A. Mosher | Velocipede | bicycles and tricycles |
| 1,374,600 | Apr. 12, 1921 | E. Newell | Band-saw guide | bandsaw guides |
| 1,374,638 | Apr. 12, 1921 | W.F. Hirst, C.A. De Dew | Hand power-driven band-saw | handheld bandsaws |
