Patent US2663012A successfully refreshed from Google Patents.
US2663012A
Expired / Lapsed
US
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Projection television tube
Assignee: Individual
•
Filing: 1952-01-30
•
Granted: 1953-12-15
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Expires: 1972-01-30
Abstract
No abstract record available.
Inventors
- 👤 John R Beers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:05
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J29/894
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2195489A
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US2415311A
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US2440735A
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US2448476A
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US2482151A
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US2459637A
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US2435296A
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US2453003A
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US2473320A
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US2520190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |