Patent US2431077A successfully refreshed from Google Patents.
US2431077A
Expired / Lapsed
US
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Cathode-ray tube with revolving magnets and adjustable sleeve
Assignee: RCA Corp
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Filing: 1943-08-31
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Granted: 1947-11-18
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Expires: 1963-08-31
Abstract
No abstract record available.
Inventors
- 👤 Waldemar J Poch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:52
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1981322A
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US2188579A
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US2224933A
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US2102421A
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GB472165A
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US2165803A
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US2219193A
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US2200039A
Cited
US2336837A
Cited
US2259531A
Cited
GB523439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |