Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885573 | Diagnostic system for combustion controller | John J. Fry, Robert A. Smith | 1989-12-05 |
| 4799394 | Analyzer block for sealing and isolating analyzer gas sample flow | Daniel C. Barnett | 1989-01-24 |