US2807784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling and matching device for external circuits of a traveling wave tube
Assignee: Thales SA
•
Filing: 1953-03-11
•
Granted: 1957-09-24
•
Expires: 1973-03-11
Abstract
No abstract record available.
Inventors
- 👤 Lerbs Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:28
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/36; H01P; H01P5/00; H01P5/08; H03; H03H; H03H2/00; H03H2/005; H03H2/006
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2567748A
Cited
US2409913A
Cited
US2711517A
Cited
US2633493A
Cited
US2555349A
Cited
US2643353A
Cited
US2645737A
Cited
US2736866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |