Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4915782 | Aluminum lithium etchant | Dolphus L. Coggins, Walter Lindner | 1990-04-10 |
| 4417949 | Enhanced aluminum etchant | Walter Lindner | 1983-11-29 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4915782 | Aluminum lithium etchant | Dolphus L. Coggins, Walter Lindner | 1990-04-10 |
| 4417949 | Enhanced aluminum etchant | Walter Lindner | 1983-11-29 |