US2523280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna system
Assignee: STC PLC
•
Filing: 1945-08-24
•
Granted: 1950-09-26
•
Expires: 1965-08-24
Abstract
No abstract record available.
Inventors
- 👤 Frank O Chesus
- 👤 Frank G Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:54
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/06; H01Q21/08; H01Q21/12; H01Q21/14; H01Q21/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2184729A
Cited
US2313048A
Cited
US2297512A
Cited
US2338441A
Cited
US2424968A
Cited
US2351723A
Cited
US2455888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-25 | 1954-03-27 | 1954-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-25 | 1958-03-27 | 1958-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-25 | 1962-03-27 | 1962-09-26 | $7700.00 | Window Closed / Lapsed |