Patent US2858464A successfully refreshed from Google Patents.
US2858464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube
Assignee: Westinghouse Electric Corp
•
Filing: 1955-09-26
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Granted: 1958-10-28
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Expires: 1975-09-26
Abstract
No abstract record available.
Inventors
- 👤 William L Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:06
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/123; H01J31/124
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2558019A
Cited
US2627050A
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US2326877A
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US2494670A
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US2728025A
Cited
US2795729A
Cited
US2795731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |