US2459602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit for stabilizing focus of magnetically focused cathoderay tubes
Assignee: Westinghouse Electric Corp
•
Filing: 1946-12-24
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Granted: 1949-01-18
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Expires: 1966-12-24
Abstract
No abstract record available.
Inventors
- 👤 Lynn J Ulman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:42
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/58; H01J29/64; H01J29/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2219194A
Cited
US2291682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-18 | 1952-07-19 | 1953-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-18 | 1956-07-19 | 1957-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-18 | 1960-07-19 | 1961-01-18 | $7700.00 | Window Closed / Lapsed |