Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5038370 | Directional variable small cross-sectional X-ray or gamma ray beam generating diaphragm with rotating helical slits | Geoffrey Harding, Franciscus L. A. M. Thissen | 1991-08-06 |