US2950411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power tubes for operation at high frequencies
Assignee: RCA Corp
•
Filing: 1958-05-26
•
Granted: 1960-08-23
•
Expires: 1978-05-26
Abstract
No abstract record available.
Inventors
- 👤 Anthony G Nekut
- 👤 Merrald B Shrader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:20
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/28; H01J19/32; H01J19/34; H01J2893/00; H01J2893/0001; H01J2893/0002; H01J2893/0003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2261569A
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US2416565A
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US2647218A
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US2719185A
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US2644907A
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US2683237A
Cited
US2748307A
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US2880349A
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US2814750A
Cited
US2814751A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |