Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4911892 | Apparatus for simultaneous detection of target gases | Richard L. Grace, Alberto M. Guzman, Marc A. Portnoff, Lymperios N. Yannopoulos | 1990-03-27 |
| 4847783 | Gas sensing instrument | Richard L. Grace, Alberto M. Guzman, Marc A. Portnoff, David A. Purta, John G. Tabacchi | 1989-07-11 |