Patent US2689314A successfully refreshed from Google Patents.
US2689314A
Expired / Lapsed
US
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Cathode-ray tube
Assignee: Individual
•
Filing: 1951-07-12
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Granted: 1954-09-14
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Expires: 1971-07-12
Abstract
No abstract record available.
Inventors
- 👤 Norman R Gunderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:29
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J29/00; H01J29/02; H01J29/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1634390A
Cited
US2053268A
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US2379880A
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US2451484A
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US2470731A
Cited
US2545123A
Cited
US2458652A
Cited
US2516752A
Cited
US2576029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |