US2830111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage type electron tube systems
Assignee: TDK Micronas GmbH
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Filing: 1951-10-06
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Granted: 1958-04-08
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Expires: 1971-10-06
Abstract
No abstract record available.
Inventors
- 👤 Philo T Farnsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:01
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/18; H01J31/26; H01J31/46; H04; H04N; H04N11/00; H04N11/06; H04N11/20; H04N11/22; H04N9/00; H04N9/12; H04N9/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2273172A
Cited
US2634327A
Cited
US2587005A
Cited
US2587006A
Cited
US2618700A
Cited
US2621244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |