| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 432/225 | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
 | 151,167 | May 19, 1874 | G.F. Simonds | Improvement in Tempering Ovens for Steel and Iron | |
 | 157,296 | Dec. 01, 1874 | C. Richardson | Improvement in Flattening and Tempering Saws | |
 | 169,736 | Nov. 09, 1875 | G.F. Simonds | Improvement in Tempering and Forming Articles of Steel | |
 | 343,358 | Jun. 08, 1886 | W.B. Barry | Apparatus for tempering saws | |