| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 122/434 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 93,790 | Aug. 17, 1869 | P.C. Wortman | Improvement in Feed-Water Heaters | feedwater apparatus | |
| RE8,216 | May 07, 1878 | P.C. Wortman | Improvement in Feed-Water Heaters | feedwater apparatus | |