US3043984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Travelling wave tubes
Assignee: MO Valve Co Ltd
•
Filing: 1959-07-29
•
Granted: 1962-07-10
•
Expires: 1979-07-29
Abstract
No abstract record available.
Inventors
- 👤 Stephenson Lawrence Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:11
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/36; H01J25/40; H01J23/00; H01J23/02; H01J23/08; H01J23/083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2899597A
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US2768322A
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US2889486A
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FR1086890A
Cited
GB776072A
Cited
US2882440A
Cited
US2857548A
Cited
US2926281A
Cited
US2941114A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |