Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7673827 | Bowl mill for a coal pulverizer with an air mill for primary entry of air | Siddhartha Biswas | 2010-03-09 |
| 7252253 | Bowl mill for a coal pulverizer with an air mill for primary entry of air | Siddhartha Biswas | 2007-08-07 |