Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869782 | Method of producing high bulking anfractuous cellulosic fiber using anhydrous liquid ammonia | John Nelson | 1989-09-26 |
| 4822332 | Device for delivering an object to a cavity | — | 1989-04-18 |