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Patent US2811669A successfully refreshed from Google Patents.
US2811669A
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Method for directing the electron beam of a binary trochotron periodically
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1953-07-16
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Granted: 1957-10-29
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Expires: 1973-07-16
Abstract
No abstract record available.
Inventors
- 👤 Warring Stig Erik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:06
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/02; H01J31/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2513260A
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US2477008A
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US2522055A
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US2616978A
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US2533401A
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US2666162A
Cited
US2623196A
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US2620454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |