Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4617637 | Servo control system for a reciprocating piston respirator | Raymond D. Chu, Michael W. Fellinger | 1986-10-14 |
| 4587967 | Oxygen enriched reciprocating piston respirator | Raymond D. Chu, Marc A. Bergman | 1986-05-13 |
| 4250483 | System for signalized intersection control | — | 1981-02-10 |