Patent US 3807240A
Jump to navigation
Jump to search
| Patent number | US 3807240A (click link for details and documents via Google Patents) |
|---|---|
| Title | Shaft-operating means |
| Inventors | Al Huegli |
| Company | Tektronix Inc |
| Filing date | 1971-12-30 |
| Grant date | 1974-04-30 |