Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6964544 | System for pneumatically conveying bulk particulate materials | John W. Pfeiffer | 2005-11-15 |
| 6837403 | High pressure rotary valve with sound reduction means | — | 2005-01-04 |