Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885142 | Apparatus in the form of a disk for the separation of oxygen from other gases and/or for the pumping of oxygen and the method of removing the oxygen | Jerry W. Suitor, C. Martin Berdahl | 1989-12-05 |
| 4846224 | Vortex generator for flow control | Earl R. Collins, Jr., Naresh K. Rohatgi | 1989-07-11 |