| Patents for Alex A. Clarke |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 1,352,581 | Sep. 14, 1920 | A.A. Clarke | Handle attachment for surface-treating machines | |
| 1,352,582 | Sep. 14, 1920 | A.A. Clarke | Surface-treating device | |
| 1,352,583 | Sep. 14, 1920 | A.A. Clarke | Surface-treating machine | drum sanders |
| 1,356,337 | Oct. 19, 1920 | A.A. Clarke | Surface-treating machine | drum sanders |
| 1,356,338 | Oct. 19, 1920 | A.A. Clarke | Surface-treating device | |
| 1,356,339 | Oct. 19, 1920 | A.A. Clarke | Surface-treating machine | drum sanders |
| 1,363,312 | Dec. 28, 1920 | A.A. Clarke | Surface-treating machine | drum sanders |
| 1,366,633 | Jan. 25, 1921 | A.A. Clarke | Work-engaging support for surface-treating machine | drum sanders |
| 1,390,501 | Sep. 13, 1921 | A.A. Clarke | Motor-driven surface-treating machine | drum sanders |
| 1,404,342 | Jan. 24, 1922 | A.A. Clarke | Surface-treating machine | drum sanders |
| 1,407,381 | Feb. 21, 1922 | A.A. Clarke | Surface-treating tool | drum sanders |
| 1,458,874 | Jun. 12, 1923 | A.A. Clarke | Motor-driven surface-treating machine | drum sanders |
