US2647219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catcher circuits for velocity modulation tubes
Assignee: International Standard Electric Corp
•
Filing: 1948-11-09
•
Granted: 1953-07-28
•
Expires: 1968-11-09
Abstract
No abstract record available.
Inventors
- 👤 Touraton Emile
- 👤 Dumousseau Claude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:09
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/36
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2064469A
Cited
US2233779A
Cited
US2289756A
Cited
US2300052A
Cited
US2367295A
Cited
US2489082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |