Patent US2824989A successfully refreshed from Google Patents.
US2824989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color tube mask positioner
Assignee: CBS Broadcasting Inc
•
Filing: 1954-12-21
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Granted: 1958-02-25
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Expires: 1974-12-21
Abstract
No abstract record available.
Inventors
- 👤 Christofferson James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:28
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/06; H01J29/07; H01J29/073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23735E
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US2733366A
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US2305459A
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US2220973A
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US2440403A
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US2546828A
Cited
US2590764A
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US2611100A
Cited
US2682620A
Cited
US2690518A
Cited
US2727172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |