| All Patents of Type: spiral screwdrivers |
Patents 1 -
15
of 111
      |
| Number | Date | Patentee | Title | Type |
| 80,583 | Aug. 04, 1868 | I. Allard | Improvement in screw-drivers | spiral screwdrivers |
| 91,634 | Jun. 22, 1869 | W. Hofer | Improvement in screw-driver | spiral screwdrivers |
| 128,950 | Jul. 16, 1872 | G.J. Capewell | Devices for Attaching Buttons To Garments | spiral screwdrivers |
| 133,994 | Dec. 17, 1872 | T.D. Lakin | Improvement in converting motion | spiral screwdrivers |
| 157,087 | Nov. 24, 1874 | I. Allard | Improvement in screw-drivers | |
| 191,304 | May 29, 1877 | J.T. Bruen | Improvement in wire screws and nuts | spiral screwdrivers |
| 201,372 | Mar. 19, 1878 | J.B. West | Improvement in screw-drivers | spiral screwdrivers |
| 261,925 | Aug. 01, 1882 | E. Herzig | Screw-driver | spiral screwdrivers |
| 268,938 | Dec. 12, 1882 | A.H. Reid | Bit-stock | spiral screwdrivers |
| 278,261 | May 22, 1883 | C.H. Olson | Screw-driver | spiral screwdrivers |
| 301,915 | Jul. 15, 1884 | C.H. Olson | Screw-driver | spiral screwdrivers |
| 306,096 | Oct. 07, 1884 | C.H. Olson | Screw-driver | spiral screwdrivers |
| 327,780 | Oct. 06, 1885 | N. Fellers | Screw driver | spiral screwdrivers |
| 339,277 | Apr. 06, 1886 | J.R. Doolittle | Screw driver | spiral screwdrivers |
| 354,359 | Dec. 14, 1886 | J.C. Spencer | Handle for screw-drivers and other tools | spiral screwdrivers |
