Patent US2677779A successfully refreshed from Google Patents.
US2677779A
Expired / Lapsed
US
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Tricolor kinescope magnetic shield
Assignee: RCA Corp
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Filing: 1953-05-22
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Granted: 1954-05-04
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Expires: 1973-05-22
Abstract
No abstract record available.
Inventors
- 👤 Hunter C Goodrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:06
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/701; H01J29/702; H01J29/705; H01J29/86; H01J29/867; H04; H04N; H04N9/00; H04N9/12; H04N9/16; H04N9/28; H01J2229/00; H01J2229/0007; H01J2229/0046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |