US2432571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge device employing resonators
Assignee: RCA Corp
•
Filing: 1943-02-24
•
Granted: 1947-12-16
•
Expires: 1963-02-24
Abstract
No abstract record available.
Inventors
- 👤 Andrew V Haeff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:40
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/02; H01J25/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2128236A
Cited
US2167201A
Cited
US2259690A
Cited
US2312723A
Cited
US2306860A
Cited
US2304186A
Cited
US2272211A
Cited
US2309966A
Cited
US2289846A
Cited
US2381539A
Cited
US2311520A
Cited
US2329778A
Cited
US2351744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-15 | 1951-06-16 | 1951-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-15 | 1955-06-16 | 1955-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-15 | 1959-06-16 | 1959-12-16 | $7700.00 | Window Closed / Lapsed |