Patent US4804639A successfully refreshed from Google Patents.
Patent US3247515A successfully refreshed from Google Patents.
US3247515A
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Low profile antenna
Assignee: Northrop Grumman Corp
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Filing: 1963-03-04
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Granted: 1966-04-19
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Expires: 1983-03-04
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Boyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:20
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/26; H01Q9/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
AN ANTENNA COMPRISING A HORIZONTAL, CONDUCTIVE CLOSED RING MEMBER, A LINEAR CONDUCTIVE STUB MEMBER JOINED AT ONE END TO SAID RING MEMBER AND EXTENDING RADIALLY TOWARD THE CENTER OF SAID RING MEMBER IN THE SAME PLANE THEREWITH, A SUBSTANTIAL CONDUCTIVE PLANE MEMBER SPACED BELOW AND PARALLEL TO SAID RING MEMBER, A FIRST CAPACITOR MEANS CONNECTED BETWEEN SAID RING MEMBER AND SAID PLANE MEMBER AT A LOCATION DIAMETRICALLY OPPOSITE SAID STUB MEMBER, A SECOND CAPACITOR MEANS CONNECTED BETWEEN SAID RING MEMBER AND SAID PLANE MEMBER AT THE JUNCTION OF SAID STUB MEMBER AND SAID RING
Claim 2
Dependent Claim
94 words
AN ANTENNA COMPRISING A HORIZONTAL, CONDUCTIVE CLOSED RING MEMBER, A LINEAR CONDUCTIVE STUB MEMBER JOINED AT ONE END TO SAID RING MEMBER AND EXTENDING RADIALLY TOWARD THE CENTER OF SAID RING MEMBER IN THE SAME PLANE THEREWITH, A SUBSTANTIAL CONDUCTIVE PLANE MEMBER SPACED BELOW AND PARALLEL TO SAID RING MEMBER, A FIRST CAPACITOR MEANS CONNECTED BETWEEN SAID RING MEMBER AND SAID PLANE MEMBER AT A LOCATION DIAMETRICALLY OPPOSITE SAID STUB MEMBER, A SECOND CAPACITOR MEANS CONNECTED BETWEEN SAID RING MEMBER AND SAID PLANE MEMBER AT THE JUNCTION OF SAID STUB MEMBER AND SAID RING
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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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |