US2985876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerial systems
Assignee: Marconis Wireless Telegraph Co Ltd
•
Filing: 1957-11-08
•
Granted: 1961-05-23
•
Expires: 1977-11-08
Abstract
No abstract record available.
Inventors
- 👤 Clough Newsome Henry
- 👤 Wielobob Mieczyslaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:20
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)
US1988006A
Cited
US2221946A
Cited
US2271517A
Cited
DE761110C
Cited
US2601610A
Cited
US2640930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |