| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 81/444 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 544,606 | Aug. 13, 1895 | J.R. Balsley | Screw Holder and Driver | screwdriver blades | |
| 595,859 | Dec. 21, 1897 | F.B. Miller | Screw holding screwdriver | screwdriver blades | |
| 1,360,368 | Nov. 30, 1920 | G.N. Coburn | Screw holding screwdriver | screwdriver blades | |