| Patents for none listed |
Patents 571 -
585
of 3291
      |
| Number | Date | Patentee | Title | Type |
| D57,239 | Mar. 08, 1921 | P. Kuzmjak | Pair Of Tongs | pliers |
| D57,252 | Mar. 08, 1921 | E.W. Myers | Handle For Pliers or Similar Gripping Surfaces | pliers |
| 1,370,598 | Mar. 08, 1921 | D.H. Lapointe | Chuck | drill press chucks |
| D57,323 | Mar. 15, 1921 | C.C. Evans | Wrench | automotive specialty wrenches |
| D57,394 | Mar. 15, 1921 | C.E. Swihart | Combination Tool | pliers |
| 1,371,350 | Mar. 15, 1921 | S.A. Campbell | Wrench | socket wrenches |
| 1,371,617 | Mar. 15, 1921 | H. Germanow | Combination-Vise | toolmakers vises |
| 1,371,965 | Mar. 15, 1921 | P. York | Port Plug Wrench | automotive specialty wrenches |
| 1,372,433 | Mar. 22, 1921 | F. Janusch | Vernier Surface Gage | surface gauges |
| D57,548 | Apr. 12, 1921 | A.H. Starrett | Design for a prick-punch, nail-set, or article of similar nature | punches |
| 1,375,530 | Apr. 19, 1921 | C.G. Moline | Wrench | screw adjust wrenches |
| 1,375,747 | Apr. 26, 1921 | M. Zigray | Rivet Gage | special purpose gauges |
| 1,376,583 | May 03, 1921 | H.G. Rice | Bottle Capper | bottle cappers |
| 1,378,209 | May 17, 1921 | J.E. Bergman | Wrench | nut wrenches |
| D57,987 | May 24, 1921 | C.W. Manzel | Grease Gun | grease guns |
