| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for J. W. Downing | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
 | 1,124,311 | Jan. 12, 1915 | C.L. Mattison | Belt sanding-machine | |
 | 1,181,330 | May 02, 1916 | C.L. Mattison | Abrading or polishing machine | |
 | 1,222,783 | Apr. 17, 1917 | M.W. Mattison | Cutter-head | |