| All Patents in class 81/461 |
Patents 1 -
10
of 10
      |
| Number | Date | Patentee | Title | Type |
| 173,356 | Feb. 08, 1876 | T.J. Sloan | Improvement in Screw-Drivers | screwdriver blades |
| 210,875 | Dec. 17, 1878 | E.S. Pierce | Three-jaw scroll chuck with conical volute | |
| 306,491 | Oct. 14, 1884 | G.W. Jackman | Screw holding screwdriver | screwdriver blades |
| 438,801 | Oct. 21, 1890 | W.E. Delehanty | Bung and Bushing | auxiliary wrenches |
| 482,713 | Sep. 20, 1892 | J. Baeumle | Bung | auxiliary wrenches |
| 1,075,710 | Oct. 14, 1913 | D.S. Goodwin | BRISTO | wrenches |
| 1,468,055 | Sep. 18, 1923 | W.I. Tuttle | Valve-Grinding Apparatus | valve grinding tools |
| 1,872,392 | Aug. 16, 1932 | H.G. Lien, W.A. Bishman | Wrench For Automobile Hub Caps | automotive specialty wrenches |
| 4,095,492 | Jun. 20, 1978 | M.A. Makela | Radiator Cap Turning Tool | automotive tools |
| 5,425,289 | Jun. 20, 1995 | D.J. Iwinski | Bung Tool | |
