US2633531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broad band antenna system
Assignee: Individual
•
Filing: 1946-03-29
•
Granted: 1953-03-31
•
Expires: 1966-03-29
Abstract
No abstract record available.
Inventors
- 👤 Jessie A Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:39
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/06; Y; Y10; Y10S; Y10S252/00; Y10S252/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20922E
Cited
US2205874A
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US2224898A
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US2239724A
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US2249597A
Cited
US2286179A
Cited
US2297896A
Cited
US2374271A
Cited
US2455403A
Cited
US2490957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |