| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 266/260 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 153,115 | Jul. 14, 1874 | I.J. Robinson | Improvement in processes for tempering the blades of squares | carpenter squares | |
| 2,309,518 | Jan. 26, 1943 | J.M. Luers | Quenching and Straightening Tool | heat treating machines | |