US2815440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remotely controlled plural antennas and radio frequency amplifiers for receiver
Assignee: Individual
•
Filing: 1953-04-27
•
Granted: 1957-12-03
•
Expires: 1973-04-27
Abstract
No abstract record available.
Inventors
- 👤 Wendell S Fletcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:07
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1658825A
Cited
US1840013A
Cited
US2428300A
Cited
US2531438A
Cited
US2523173A
Cited
US2679001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |