| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 416/178 | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
| 5,331X | Jan. 13, 1829 | J. Houghton | Letting water on water wheels | ||
 | 1,038,110 | Sep. 10, 1912 | B.S. Foss | Centrifugal fan-wheel | |
 | 2,083,996 | Jun. 15, 1937 | T.G. Jonn | Centrifugal fan | |