Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4365980 | Air filter assembly | Robert Culbert | 1982-12-28 |
| RE31093 | Process for making activated carbon with control of metal ion concentration in phosphoric acid | Edward D. Tolles, Robert L. Stallings | 1982-11-30 |