| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for W. A. Clark & Co. | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
 | 20,192 | May 11, 1858 | W.A. Clark | Method of seating the movable cutter in expansive bits | |
 | 21,597 | Sep. 28, 1858 | W.A. Clark | Expansive bit | |
 | 24,722 | Jul. 12, 1859 | W.A. Clark | Improved device for fastening cutters of hollow augers | |
 | 28,653 | Jun. 12, 1860 | W.A. Clark | Adjustable hollow auger | |