US3238531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronically steerable narrow beam antenna system utilizing dipolar resonant plasma columns
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1963-03-12
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Granted: 1966-03-01
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Expires: 1983-03-12
Abstract
No abstract record available.
Inventors
- 👤 Kaufman Irving
- 👤 William H Steier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:26
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/44; H01Q1/00; H01Q1/36; H01Q1/364; H01Q1/366
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN APPARATUS FOR PROPAGATING A BEAM OF MICROWAVE ENERGY IN A FIRST BEAM DIRECTION DURING A FIRST TIME INTERVAL AND IN A SECOND BEAM DIRECTION DURING A SECOND TIME INTERVAL: AN ARRAY INCLUDING AT LEAST FIRST AND SECOND ELONGATED GAS DISCHARGE DEVICES POSITIONED IN SPACED-APART PARALLEL ALIGNMENT IN A PREDETERMINED PLANE; CURRENT SUPPLYING CIRCUIT MEANS FOR ENERGIZING BOTH SAID DEVICES IN A MANNER TO MAINTAIN FIRST AND SECOND ELONGATED PLASMA COLUMNS RESPECTIVELY WITHIN SAID FIRST AND SECOND DEVICES; CURRENT CONTROLLING MEANS FOR SELECTIVELY AND ALTERNATIVELY ADJUSTING THE FREE ELECTRON DENSITY IN SAID FIRST AND SECOND PLASMA COLUMNS TO A CRITICAL DENSITY VALUE SATISFYING THE RELATION:
Claim 2
Dependent Claim
3 words
6.104VN WR= V1+K
References Cited (Backward Citations)
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US2082042A
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US2268639A
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US2407250A
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US2425328A
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US2866164A
Cited
US3067420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |