Patent US 4831222A
| Patent number | US 4831222A |
|---|---|
| Title | Integrated pad switch |
| Inventors | Heinz Erwin Grellmann, Leonard A. Roland |
| Company | Tektronix Inc |
| Filing date | 1985-04-29 |
| Grant date | 1989-05-16 |
| Cites |
| Patent number | US 4831222A |
|---|---|
| Title | Integrated pad switch |
| Inventors | Heinz Erwin Grellmann, Leonard A. Roland |
| Company | Tektronix Inc |
| Filing date | 1985-04-29 |
| Grant date | 1989-05-16 |
| Cites |