Patent US4984096A successfully refreshed from Google Patents.
Patent US3272593A successfully refreshed from Google Patents.
Patent US2920227A successfully refreshed from Google Patents.
US2920227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder type delay line
Assignee: Thales SA
•
Filing: 1953-05-19
•
Granted: 1960-01-05
•
Expires: 1973-05-19
Abstract
No abstract record available.
Inventors
- 👤 Dohler Oscar
- 👤 Epsztein Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:45
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2527477A
Cited
US2565387A
Cited
US2511407A
Cited
US2643353A
Cited
US2629015A
Cited
US2768322A
Cited
US2823332A
Cited
US2745984A
Cited
US2827589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |