Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889545 | Hydrocarbon gas processing | Roy E. Campbell, Hank M. Hudson | 1989-12-26 |
| 4869740 | Hydrocarbon gas processing | Roy E. Campbell, Hank M. Hudson | 1989-09-26 |
| 4854955 | Hydrocarbon gas processing | Roy E. Campbell, Hank M. Hudson | 1989-08-08 |