| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 173/30 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 273,136 | Feb. 27, 1883 | A. Noteman | Portable steam boring-engine | portable timber borers | |
| 481,598 | Aug. 30, 1892 | W.X. Stevens | Rock-drilling machine | impact chisels and drills | |
| 494,461 | Mar. 28, 1893 | F.H. Cathcart | Power-Driven Tool | ||
| 750,744 | Jan. 26, 1904 | J.F. Willey | Portable drill | handheld power tools | |
| 810,444 | Jan. 23, 1906 | C.W. Theil | Electric drill | handheld power tools | |
| 922,371 | May 18, 1909 | R. Winkler | Boring Machine | corner drills | |