Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5357726 | Composite materials for structural end uses | John A. Effenberger, Keith G. Koerber, Michael P. Cushman, Milton B. Punnett | 1994-10-25 |
| 5141800 | Method of making laminated PTFE-containing composites and products thereof | John A. Effenberger, Frank M. Keese, Keith G. Koerber | 1992-08-25 |