| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 431/239 | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
 | 142,357 | Sep. 02, 1873 | A. Smith | Improvement in apparatus for burning gas-tar | |
| 304,365 | Sep. 02, 1884 | A.H. Shipman | Hydrocarbon-furnace | ||