Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876051 | Apparatus and method for extruding and expanding polytetrafluoroethylene tubing and the products produced thereby | Michael L. Campbell, Rob G. Riffle, Charles E. Biggerstaff | 1989-10-24 |