US3422298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube having a non-discoloring x-ray absorptive display window
Assignee: Philips North America LLC
•
Filing: 1966-03-15
•
Granted: 1969-01-14
•
Expires: 1986-03-15
Abstract
No abstract record available.
Inventors
- 👤 Johannes De Gier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:23
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/87; C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/083; C03C3/085; C03C3/087; H01J29/863; H01J2229/00; H01J2229/87; H01J2229/875
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR858667A
Cited
US2293529A
Cited
US2579709A
Cited
US2676109A
Cited
US2747105A
Cited
US2856303A
Cited
US3356579A
Cited
US3209191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |