US3378636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television tube with ambient light filter
Assignee: McDonnell Douglas Corp
•
Filing: 1965-05-20
•
Granted: 1968-04-16
•
Expires: 1985-05-20
Abstract
No abstract record available.
Inventors
- 👤 Vern E Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:38
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J29/896; H01J29/02; H01J29/10; H01J29/18; H01J29/30; H01J29/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2091152A
Cited
US2653516A
Cited
GB675925A
Cited
US2942254A
Cited
US2977412A
Cited
US2943964A
Cited
FR1272812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |