US3159839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Driven dipole coupled to a colinear array spaced with respect to the first fresnel zone
Assignee: Individual
•
Filing: 1959-05-05
•
Granted: 1964-12-01
•
Expires: 1979-05-05
Abstract
No abstract record available.
Inventors
- 👤 Donald L Hings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:15
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A DIRECTIONAL ANTENNA COMPRISING, A DRIVEN ELEMENT HAVING A FIRST FRESNEL ZONE, AND A PLURALITY OF PARASITIC ELEMENTS EACH SUBSTANTIALLY RESONANT TO THE FREQUENCY OF SAID ANTENNA AND SPACED ALONG A CURVED LINE LYING GENERALLY PARALLEL TO AND SPACE-PHASED APPROXIMATELY NINETY DEGREES ON THE INNER SIDE OF SAID FIRST FRESNEL ZONE.
Claim 2
Dependent Claim
51 words
A DIRECTIONAL ANTENNA COMPRISING, A DRIVEN ELEMENT HAVING A FIRST FRESNEL ZONE, AND A PLURALITY OF PARASITIC ELEMENTS EACH SUBSTANTIALLY RESONANT TO THE FREQUENCY OF SAID ANTENNA AND SPACED ALONG A CURVED LINE LYING GENERALLY PARALLEL TO AND SPACE-PHASED APPROXIMATELY NINETY DEGREES ON THE INNER SIDE OF SAID FIRST FRESNEL ZONE.
References Cited (Backward Citations)
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Cited
US1721702A
Cited
US1745342A
Cited
US1860123A
Cited
US2156653A
Cited
US2112269A
Cited
US2745102A
Cited
US2715184A
Cited
US2776430A
Cited
US2667577A
Cited
US2886813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |