| Patents for none listed |
Patents 556 -
570
of 3200
      |
| Number | Date | Patentee | Title | Type |
| 1,367,969 | Feb. 08, 1921 | J.C. Holley | Wrench | brace wrenches |
| D57,113 | Feb. 22, 1921 | L. Campbell, Sr. | Wrench | wrenches |
| D57,153 | Feb. 22, 1921 | L.A. Safford | Handle for Wrench or Similar Hand Tools | wrench handle components |
| D57,157 | Feb. 22, 1921 | J. Schwendner | Combination Tool | combination tools |
| 1,369,784 | Mar. 01, 1921 | G.D. Chenette | Wrench | screw adjust wrenches |
| 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 |
