Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4344769 | Process and installation for treating coking coal | Roger M. Puff | 1982-08-17 |
| 4321032 | Process for the treatment of combustible granular and/or pulverulent material by drying and/or heating, and an installation for carrying out the process | Henri Brice, Roger M. Puff | 1982-03-23 |