| All Patents in class 279/9.1 |
Patents 1 -
10
of 20
      |
| Picture | Number | Date | Patentee | Title |
 | 244,390 | Jul. 19, 1881 | J. Hilton | Detachable Saw-Handle |
| | 260,314 | Jun. 27, 1882 | G.V. Sheffield, J.A. Parks | Drill Chuck |
 | 307,252 | Oct. 28, 1884 | A.H. Armstrong | Bit-holder |
 | 523,555 | Jul. 24, 1894 | J. Swan | Screw-Driver |
 | 583,910 | Jun. 08, 1897 | G.J. Knapp | Auger-Handle |
 | 871,005 | Nov. 12, 1907 | A. Tindel | Chuck mechanism |
| | 911,210 | Feb. 02, 1909 | C.M. Conradson | Grinding Machine |
 | 1,059,132 | Apr. 15, 1913 | G.O. Leopold, T.J. Fegley | Bit storage handle for the North Bros. (e.g. 1530 & 1431) eggbeater drills. |
| | 1,165,500 | Dec. 28, 1915 | G.L. Green | Tool Holder |
 | 1,289,375 | Dec. 31, 1918 | F.E. Bright | Grinding Machine |
