US2490968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra high frequency transmitter
Assignee: RCA Corp
•
Filing: 1946-07-30
•
Granted: 1949-12-13
•
Expires: 1966-07-30
Abstract
No abstract record available.
Inventors
- 👤 Eugene O Keizer
- 👤 Vernon D Landon
- 👤 Robert L Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:19
CPC Classifications
H; H03; H03C; H03C7/00; H03C7/02; H03F; H03F3/00; H03F3/54
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2217280A
Cited
US2404542A
Cited
US2408355A
Cited
US2416565A
Cited
US2438832A
Cited
US2462909A
Cited
US2421725A
Cited
US2423548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |