Patent DE2322631A1 successfully refreshed from Google Patents.
Patent US2682063A successfully refreshed from Google Patents.
US2622199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio aerial system
Assignee: Marconis Wireless Telegraph Co Ltd
•
Filing: 1948-10-11
•
Granted: 1952-12-16
•
Expires: 1968-10-11
Abstract
No abstract record available.
Inventors
- 👤 Ramsay John Forrest
- 👤 Peat John Dewar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:40
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/12; H01Q3/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2415094A
Cited
US2460286A
Cited
US2489288A
Cited
US2432990A
Cited
FR883665A
Cited
US2414266A
Cited
US2407068A
Cited
US2482162A
Cited
US2465416A
Cited
US2433924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |