Patent US3213457A successfully refreshed from Google Patents.
US3213457A
Expired / Lapsed
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Zig-zag antenna
Assignee: Lockheed Martin Corp
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Filing: 1961-07-06
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Granted: 1965-10-19
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Expires: 1981-07-06
Abstract
No abstract record available.
Inventors
- 👤 John W Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:53
CPC Classifications
H; H01; H01Q; H01Q11/00; H01Q11/02; H01Q11/10; H01Q1/00; H01Q1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A ZIG-ZAG ANTENNA COMPRISING A FIRST LEG HAVING A PLURALITY OF RADIATION ELEMENTS DEFINING A FIRST PLANE, A SECOND LEG HAVING A PLURALITY OF RADIATION ELEMENTS DEFINING A SECOND PLANE, THE ENDS OF SAID RADIATION ELEMENTS OF EACH LEG DEFINING A PARABOLA, MEANS FOR MAINTAINING SAID FIRST AND SECOND PLANES DEFINED BY SAID RADIATION ELEMENTS IN EQUISPACED RELATION.
Claim 2
Dependent Claim
58 words
A ZIG-ZAG ANTENNA COMPRISING A FIRST LEG HAVING A PLURALITY OF RADIATION ELEMENTS DEFINING A FIRST PLANE, A SECOND LEG HAVING A PLURALITY OF RADIATION ELEMENTS DEFINING A SECOND PLANE, THE ENDS OF SAID RADIATION ELEMENTS OF EACH LEG DEFINING A PARABOLA, MEANS FOR MAINTAINING SAID FIRST AND SECOND PLANES DEFINED BY SAID RADIATION ELEMENTS IN EQUISPACED RELATION.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |