Patent US3525995A successfully refreshed from Google Patents.
US3525995A
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Amplitude tapering,nonsymmetrical binary feed networks for highpower hf phased arrays
Assignee: Collins Radio Co
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Filing: 1967-03-14
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Granted: 1970-08-25
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Expires: 1987-03-14
Abstract
No abstract record available.
Inventors
- 👤 Klaus G Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:03
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/06; H01Q21/22; H01Q3/00; H01Q3/26; H03; H03H; H03H7/00; H03H7/48; H03H7/482; H03H7/487; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/54; H04B1/58; H04B1/581
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |