US2773213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam tubes
Assignee: RCA Corp
•
Filing: 1951-03-13
•
Granted: 1956-12-04
•
Expires: 1971-03-13
Abstract
No abstract record available.
Inventors
- 👤 Wellesley J Dodds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:52
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2233126A
Cited
US2074478A
Cited
US2511407A
Cited
US2578434A
Cited
US2584308A
Cited
US2588832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |