| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 431/168 | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
 | 1,403,952 | Jan. 17, 1922 | F. Hardinge | Fuel oil burner | |
 | 1,447,384 | Mar. 06, 1923 | F. Hardinge | Fuel oil burner | |
 | 1,447,385 | Mar. 06, 1923 | F. Hardinge | Oil burner | |
 | 1,455,049 | May 15, 1923 | F. Hardinge | Oil burner | |
 | 1,735,245 | Nov. 12, 1929 | F. Hardinge | Oil burner | |
 | 1,739,548 | Dec. 17, 1929 | F. Hardinge | Oil burner | |
 | 1,748,416 | Feb. 25, 1930 | F. Hardinge | Oil burner | |
 | 1,792,222 | Feb. 10, 1931 | H.H. Hardinge | Oil burner | |