| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for James Sproat | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
 | 1,457 | Dec. 31, 1839 | J. Sproat, M. Andrews | Manner of relieving the collars of circular saws from the friction occasioned by the article sawed | |