Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4322538 | Preparation of symmetrical tetrachloropyridine | Gail E. Vrieland, Bart J. Bremmer | 1982-03-30 |
| 4321389 | Process for preparing 4-bromotetrachloropyridine | G. Edwin Vrieland, Bart J. Bremmer | 1982-03-23 |