Patent US1475277A successfully refreshed from Google Patents.
US2983836A
Expired / Lapsed
US
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Extended flood beam source for image tubes
Assignee: TDK Micronas GmbH
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Filing: 1955-12-20
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Granted: 1961-05-09
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Expires: 1975-12-20
Abstract
No abstract record available.
Inventors
- 👤 Rudnick Paul
- 👤 Orthuber Richard Kaspar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:41
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/395; H01J31/00; H01J31/08; H01J31/50; H01J31/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2149849A
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US2322361A
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US2258294A
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US2306272A
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US2683832A
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US2717971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |