Patent US3755644A successfully refreshed from Google Patents.
Patent US2565533A successfully refreshed from Google Patents.
US2565533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode-ray tube
Assignee: Rauland Borg Corp
•
Filing: 1950-05-19
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Granted: 1951-08-28
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Expires: 1970-05-19
Abstract
No abstract record available.
Inventors
- 👤 Szegho Constantin Stephen
- 👤 Harry H Boeing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:48
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/84; H01J29/845
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2181850A
Cited
US2211614A
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US2274586A
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US2472766A
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US2460609A
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US2456474A
Cited
US2496127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |