US3497749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color display tube whose blue emitter is a silver-activated zinc sulphide containing only one of magnesium,calcium,strontium and barium
Assignee: RCA Corp
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Filing: 1966-11-28
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Granted: 1970-02-24
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Expires: 1986-11-28
Abstract
No abstract record available.
Inventors
- 👤 Franklin G Bushey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:19
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/20; C; C09; C09K; C09K11/00; C09K11/08; C09K11/58; C09K11/582; C09K11/584
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2996402A
Cited
US2966464A
Cited
US2956028A
Cited
US3052638A
Cited
US2991383A
Cited
US3243625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |