Patent US2163937A successfully refreshed from Google Patents.
Patent US3324475A successfully refreshed from Google Patents.
US3324475A
Expired / Lapsed
US
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Scanning antenna array wherein feed utilizes dispersive elements to provide nonlinear scan-frequency relationship
Assignee: Plessey Overseas Ltd
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Filing: 1964-02-13
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Granted: 1967-06-06
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Expires: 1984-02-13
Abstract
No abstract record available.
Inventors
- 👤 Milne Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:25
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A DIRECTIONAL AERIAL SYSTEM COMPRISING AN ARRAY OF RADIATING ELEMENTS FED BY A TRANSMISSION LINE INCLUDING DISPERSIVE ELEMENTS SO THAT BECAUSE OF THE DISPERSION THE SWEEP OF THE RADIATION BEAM OF SAID ARRAY IS NON-LINEARLY RELATED TO THE FREQUENCY.
Claim 2
Dependent Claim
39 words
A DIRECTIONAL AERIAL SYSTEM COMPRISING AN ARRAY OF RADIATING ELEMENTS FED BY A TRANSMISSION LINE INCLUDING DISPERSIVE ELEMENTS SO THAT BECAUSE OF THE DISPERSION THE SWEEP OF THE RADIATION BEAM OF SAID ARRAY IS NON-LINEARLY RELATED TO THE FREQUENCY.
References Cited (Backward Citations)
US2605413A
Cited
US2530580A
Cited
US2878472A
Cited
US3041605A
Cited
US3105968A
Cited
US3020549A
Cited
US3142028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |