US2531432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broad band antenna system
Assignee: Federal Telecommunication Laboratories Inc
•
Filing: 1948-10-01
•
Granted: 1950-11-28
•
Expires: 1968-10-01
Abstract
No abstract record available.
Inventors
- 👤 Himmel Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:52
CPC Classifications
H; H01; H01Q; H01Q11/00; H01Q11/02; H01Q11/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1959407A
Cited
US2207504A
Cited
US2270314A
Cited
US2368663A
Cited
US2434893A
Cited
US2430353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |