US3026445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Travelling wave electron discharge tubes
Assignee: Teledyne UK Ltd
•
Filing: 1959-03-09
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Granted: 1962-03-20
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Expires: 1979-03-09
Abstract
No abstract record available.
Inventors
- 👤 Staerck Thomas Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:11
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/36; H01J23/40; H01J23/42; H01J23/16; H01J23/24; H01J23/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR993491A
Cited
US2767344A
Cited
US2806170A
Cited
US2871393A
Cited
US2876379A
Cited
FR1152970A
Cited
GB807357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |