| All Patents in class 81/436 |
Patents 61 -
75
of 96
      |
| Number | Date | Patentee | Title | Type |
| 1,492,680 | May 06, 1924 | F. Ducharme | Hand tool | screwdrivers |
| 1,493,165 | May 06, 1924 | E.A. Schade | Screw Driver | screwdriver handles |
| 1,677,572 | Jul. 17, 1928 | L.V. Walkley | Screw Driver | screwdriver handles |
| 1,696,444 | Dec. 25, 1928 | F.A. Haist, E.S. Miller | Holder for Socket Wrench sets | wrench set holders |
| 1,712,484 | May 14, 1929 | W.S. Thomson | Screw Driver | screwdriver handles |
| 1,721,065 | Jul. 16, 1929 | C. Bodmer | Hand tool | |
| 1,738,405 | Dec. 03, 1929 | B. Thal | Improvement in Screwdriver blades | screwdriver blades |
| 1,746,381 | Feb. 11, 1930 | E.E. Davis | Boring tool | boring heads |
| 1,752,703 | Apr. 01, 1930 | H.E. Simson | Hand Drill or Screw Driver | screwdriver mechanisms |
| 1,755,822 | Apr. 22, 1930 | W.F. Hobbs | Screw Driver and Method of Making the Same | screwdriver handles |
| 1,761,156 | Jun. 03, 1930 | F.R. Rosan | Turning Tool Applicable to Remove Refractory Screws | screw extractors |
| 1,839,835 | Jan. 05, 1932 | H.J. Cook | Screw driver | screwdrivers |
| 1,841,688 | Jan. 19, 1932 | F.J. Vlchek | Tool | screwdriver handles |
| 1,888,222 | Nov. 22, 1932 | H.B. Curtis, A.E. Keating | Screw Driver | screwdrivers |
| 1,979,460 | Nov. 06, 1934 | H.S. Forsberg | Screw driver | screwdrivers |
