US2611870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Directive antenna system
Assignee: International Standard Electric Corp
•
Filing: 1947-01-16
•
Granted: 1952-09-23
•
Expires: 1967-01-16
Abstract
No abstract record available.
Inventors
- 👤 Clavier Andre Gabriel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:11
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/02; H01Q3/00; H01Q3/12; H01Q3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2075808A
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US1904901A
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US2231929A
Cited
US2288177A
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US2223224A
Cited
US2460401A
Cited
US2354665A
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US2442951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |