US2728024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode-ray tubes of the lenticular grill variety
Assignee: RCA Corp
•
Filing: 1952-03-18
•
Granted: 1955-12-20
•
Expires: 1972-03-18
Abstract
No abstract record available.
Inventors
- 👤 Edward G Ramberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:21
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/20; H01J31/201; H01J31/203; H01J31/205; H01J29/00; H01J29/46; H01J29/80; H01J29/803; H01J29/806; H04; H04N; H04N9/00; H04N9/12; H04N9/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1810018A
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FR866065A
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US2315367A
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US2532511A
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US2595548A
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US2581487A
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US2580250A
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US2602145A
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US2606303A
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US2692532A
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US2669675A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |