Patent US 4497575A
Jump to navigation
Jump to search
| Patent number | US 4497575A (click link for details and documents via Google Patents) |
|---|---|
| Title | Optical fiber test instrument calibrator |
| Inventors | Harald Philipp |
| Company | Tektronix Inc |
| Filing date | 1982-11-01 |
| Grant date | 1985-02-05 |