Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5750408 | Method of modifying an automotive type oxygen sensor for use in an industrial process analyzer | George R. Hall, II, Daniel C. Barnett, Robert A. Smith | 1998-05-12 |
| 4852384 | Automatic calibration and control system for a combined oxygen and combustibles analyzer | Gordon D. Woolbert, John W. Robertson | 1989-08-01 |
| 4846410 | Apparatus for monitoring low-level combustibles | John W. Robertson, Gordon D. Woolbert | 1989-07-11 |
| 4778113 | Apparatus for monitoring low level combustibles | John W. Robertson, Gordon D. Woolbert | 1988-10-18 |