US3175219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular dipole array with central reflector and switching system for beam steering
Assignee: General Dynamics Corp
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Filing: 1961-06-20
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Granted: 1965-03-23
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Expires: 1981-06-20
Abstract
No abstract record available.
Inventors
- 👤 Irving S Wernick
- 👤 Bush Alphonse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:54
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/24; H01Q3/242
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
69 words
AN ANTENNA SYSTEM COMPRISING A CONDUCTIVE FRAME, A PLURALITY OF SUBSTANTIALLY QUARTER WAVELENGTH ACTIVE ELEMENTS MOUNTED ON SAID CONDUCTIVE FRAME AND ARRANGED ON THE PERIPHERY OF A CIRCLE, A REFLECTOR ELEMENT CONNECTED TO SAID CONDUCTIVE FRAME AT THE CENTER OF SAID CIRCLE, AND A SWITCH INCLUDING MEANS FOR SELECTIVELY CONNECTING SAID ACTIVE ELEMENTS TO A TRANSMISSION LINE AND GROUNDING THE REMAINDER TO SAID ACTIVE ELEMENTS TO SAID CONDUCTIVE FRAME.
References Cited (Backward Citations)
US2251997A
Cited
US2515344A
Cited
US2531444A
Cited
US2659075A
Cited
US2585670A
Cited
FR1096424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |