Patent US3049639A successfully refreshed from Google Patents.
US3049639A
Expired / Lapsed
US
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High power switch tube
Assignee: General Electric Co
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Filing: 1959-06-08
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Granted: 1962-08-14
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Expires: 1979-06-08
Abstract
No abstract record available.
Inventors
- 👤 Gilbert H Reiling
- 👤 James M Lafferty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:10
CPC Classifications
H; H01; H01J; H01J13/00; H01J13/02; H01J2893/00; H01J2893/0072; H01J2893/0073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2354031A
Cited
US2651737A
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US2624010A
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US2727174A
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US2605441A
Cited
US2824254A
Cited
US2877367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |