Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5668448 | Picture display device provided with an electron gun, and electron gun for use in such a device | Alfred Ketting, Ronald Van Der Wilk | 1997-09-16 |
| 5621271 | Display device of the flat-panel type comprising an electron transport duct and a segmented filament | Petrus H. F. Trompenaars, Edward Cosman, Theunis S. Baller, Nicolaas Lambert, Siebe Tjerk De Zwart | 1997-04-15 |
| 5598054 | Display device of the flat-panel type comprising an electron transport duct and a segmented filament | Petrus H. F. Trompenaars, Edward Cosman, Theunis S. Baller, Nicolaas Lambert, Siebe Tjerk De Zwart +1 more | 1997-01-28 |