Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871514 | Flapper valve | — | 1989-10-03 |
| 4808383 | FCC reactor multi-feed nozzle system | Frank M. Buyan | 1989-02-28 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871514 | Flapper valve | — | 1989-10-03 |
| 4808383 | FCC reactor multi-feed nozzle system | Frank M. Buyan | 1989-02-28 |