Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847783 | Gas sensing instrument | Richard L. Grace, Alberto M. Guzman, Marc A. Portnoff, David A. Purta, Paul D. Runco | 1989-07-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847783 | Gas sensing instrument | Richard L. Grace, Alberto M. Guzman, Marc A. Portnoff, David A. Purta, Paul D. Runco | 1989-07-11 |