Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886569 | Plasma etching process | Sureshchandra M. Ojha, Anthony D. Johnston | 1989-12-12 |
| 4865781 | Method of constructing a wall | — | 1989-09-12 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886569 | Plasma etching process | Sureshchandra M. Ojha, Anthony D. Johnston | 1989-12-12 |
| 4865781 | Method of constructing a wall | — | 1989-09-12 |