| All Patents in class 81/453 |
Patents 1 -
15
of 33
      |
| Number | Date | Patentee | Title | Type |
| 9,457 | Dec. 07, 1852 | J.W. Switzer | Screwdriver | screwdrivers |
| 96,263 | Oct. 26, 1869 | J.C. Pinner | Screw holding screwdriver | screwdriver blades |
| 274,912 | Apr. 03, 1883 | M.B. Crawford | Screw holding screwdriver | screwdriver blades |
| 302,308 | Jul. 22, 1884 | J.S. Works | Countersink Screwdriver | screwdriver blades |
| 311,308 | Jan. 27, 1885 | C.E. Glessner | Screw holding screwdriver, Watchmakers tool | watchmaker |
| 324,121 | Aug. 11, 1885 | G.F. Kolb | Screw holding screwdriver | screwdriver blades |
| 355,392 | Jan. 04, 1887 | N. Fellers | Screw-driver | spiral screwdrivers |
| 382,670 | May 08, 1888 | J.C. Trovillion | Combined Screw Hold, Screw Driver and Counter Sink | screwdriver blades |
| 414,619 | Nov. 05, 1889 | J. Weiss | Screw holding screwdriver | screwdriver blades |
| 470,778 | Mar. 15, 1892 | L.H. Boyden | Attachment for Screwdrivers | screwdriver mechanisms |
| 527,696 | Oct. 16, 1894 | M. Keehn | Screw holding screwdriver | screwdriver blades |
| 565,808 | Aug. 11, 1896 | W.G. Staples | Screw holding screwdriver | screwdriver blades |
| 730,804 | Jun. 09, 1903 | L.S. Starrett | Screw-driver | screwdrivers |
| 796,154 | Aug. 01, 1905 | R. Schulze | Screw Holding Screwdriver | screwdriver blades |
| 815,758 | Mar. 20, 1906 | L.S. Starrett | Screw Holding Screwdriver | screwdrivers |
