Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4647360 | Inert carbon fiber diaphragm | Thomas K. Fletcher, Stephen P. Krupp | 1987-03-03 |
| 4557810 | Bonded asbestos diaphragms | Richard N. Beaver, Kenneth R. Evans | 1985-12-10 |
| 4530749 | Bonded asbestos diaphragms | Richard N. Beaver, Kenneth R. Evans | 1985-07-23 |