| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Hermann George Christian Thofern | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| GB-190,820,615 | Sep. 30, 1909 | H.G. Thofern | Improvements in apparatus for the dry concentration of crushed ores | ore processing apparatus | |