Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4275353 | Method and apparatus for the detection of stagnant regions in a fluidized bed or in pneumatic conveying lines | Wen Yang, Charles E. Spangler, Jr., Dale L. Keairns | 1981-06-23 |