Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4587967 | Oxygen enriched reciprocating piston respirator | Raymond D. Chu, Anthony C. Rubner | 1986-05-13 |
| 4493614 | Pump for a portable ventilator | Raymond D. Chu | 1985-01-15 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4587967 | Oxygen enriched reciprocating piston respirator | Raymond D. Chu, Anthony C. Rubner | 1986-05-13 |
| 4493614 | Pump for a portable ventilator | Raymond D. Chu | 1985-01-15 |