Fischer-Helwig; Frank
Patent Applications and Registrations
Patent applications and USPTO patent grants for Fischer-Helwig; Frank.The latest application filed is for "grinding roller for the pressure communication of granular material".
- Fischer-Helwig; Frank - Sankt Augustin DE
- Fischer-Helwig; Frank - St. Augustin DE
- Fischer-Helwig, Frank - Augustin DE
| Patent | Date |
|---|---|
| Grinding roller for the pressure comminution of granular material Grant 7,497,396 - Splinter , et al. March 3, 2 | 2009-03-03 |
| Circulating grinding plant comprising a mill and a sifter Grant 7,300,007 - Hagedorn , et al. November 27, 2 | 2007-11-27 |
| Grinding Roller for the Pressure Communication of Granular Material App 20070215733 - Splinter; Christian ; et al. | 2007-09-20 |
| Circulating grinding plant comprising a mill and a sifter App 20050284971 - Hagedorn, Alexander ; et al. | 2005-12-29 |
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