| All Patents in class 81/436 |
Patents 16 -
30
of 95
      |
| Number | Date | Patentee | Title | Type |
| 344,160 | Jun. 22, 1886 | H.S. Brownson | Ratcheting Screwdriver | ratcheting screwdrivers |
| 348,765 | Sep. 07, 1886 | O.L. Neal | Screw and Drill Tool | screwdrivers |
| 370,255 | Sep. 20, 1887 | D.R. Hart | Screw Driver | screwdriver blades |
| 371,225 | Oct. 11, 1887 | A. Stevens | Screwdriver | ratcheting screwdrivers |
| 417,722 | Dec. 24, 1889 | D.R. Hart | Screw Driver | screwdriver blades |
| 418,167 | Dec. 31, 1889 | T.E. Copelin | Screwdriver | screwdrivers |
| 419,638 | Jan. 21, 1890 | F. Chantrell | Screw-Driver | screwdriver handles |
| 428,662 | May 27, 1890 | M.J. Bartlett | Screw-Driver | screwdriver handles |
| 432,729 | Jul. 22, 1890 | A.D. Goodell, H.E. Goodell | Screw-driver | spiral screwdrivers |
| 432,928 | Jul. 22, 1890 | M.J. Bartlett | Wrench For Screw Drivers | wrenches |
| 442,710 | Dec. 16, 1890 | L.M. Marsh | Screw-Driver and Bit-Holder | drill accessories |
| 450,154 | Apr. 14, 1891 | J.J. Hogan | Improvements in Wrenches For Internal Nipples | wrenches |
| 466,678 | Jan. 05, 1892 | C.H. Gurney | Handle For Tools or Other Implements | tool handles |
| 470,687 | Mar. 15, 1892 | J. Koelzer | Screwdriver | screwdriver handles |
| 472,591 | Apr. 12, 1892 | J.F. Steward | Screw-Driver | screwdrivers |
