US3413644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna having at least two radiators fed with different phase
Assignee: Siemens AG
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Filing: 1967-09-07
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Granted: 1968-11-26
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Expires: 1987-09-07
Abstract
No abstract record available.
Inventors
- 👤 Laub Helmut
- 👤 Hoyer Claus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:32
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/24; H01Q21/26
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |