Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7913941 | Crusher block assembly for particulate size reduction system | William Schmitz, Daniel P. Smith, Craig A. Penterson, Qingsheng Lin | 2011-03-29 |
| D575807 | Dynamic ring classifier for a coal pulverizer | Qingsheng Lin, Craig A. Penterson, Daniel P. Smith | 2008-08-26 |
| 7240868 | Dynamic ring classifier for a coal pulverizer | Qingsheng Lin, Craig A. Penterson, Daniel P. Smith | 2007-07-10 |
| 7028931 | Dynamic ring classifier for a coal pulverizer | Qingsheng Lin, Craig A. Penterson, Daniel P. Smith | 2006-04-18 |