Patent US 5231489A
| Patent number | US 5231489A (click link for details and documents via Google Patents) |
|---|---|
| Title | Moire measurement system using spectral analysis |
| Inventors | Bruce J. Penney |
| Company | Tektronix Inc |
| Filing date | 1992-05-06 |
| Grant date | 1993-07-27 |