| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for John A. Campbell | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 449,950 | Apr. 07, 1891 | L.J. Gregor, J.F. Rodgers | Sandpapering-head | sanding machines | |
| 1,195,555 | Aug. 22, 1916 | J.A. Campbell | Floor dressing and polishing machine | floor sanders | |
| 1,279,082 | Sep. 17, 1918 | J.A. Campbell | Dressing-machine for floors, &c. | floor sanders | |
| 1,523,049 | Jan. 13, 1925 | J.A. Campbell | Surfacing machine | ||