Patent US2813989A successfully refreshed from Google Patents.
US2813989A
Expired / Lapsed
US
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Color pickup tubes
Assignee: RCA Corp
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Filing: 1955-05-02
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Granted: 1957-11-19
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Expires: 1975-05-02
Abstract
No abstract record available.
Inventors
- 👤 Paul K Weimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:38
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H04; H04N; H04N23/00; H04N23/10; H04N23/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2264540A
Cited
US2446791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |