US2836752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beam generating system for cathoderay tubes employing an ion trap
Assignee: International Standard Electric Corp
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Filing: 1954-02-09
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Granted: 1958-05-27
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Expires: 1974-02-09
Abstract
No abstract record available.
Inventors
- 👤 Berthold Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:50
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/84; H01J29/845
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2658161A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |