US2939035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helical delay lines
Assignee: Thales SA
•
Filing: 1955-07-12
•
Granted: 1960-05-31
•
Expires: 1975-07-12
Abstract
No abstract record available.
Inventors
- 👤 Reverdin Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:03
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/26; H01J23/005; H01J23/27
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2636948A
Cited
US2706366A
Cited
US2773213A
Cited
US2768322A
Cited
FR1053362A
Cited
US2800605A
Cited
US2853642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |