US3307108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spherical doublet antenna with transmission line feed at current nodal points
Assignee: Patelhold Patenverwertungs and Elektro-Holding AG
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Filing: 1964-02-20
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Granted: 1967-02-28
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Expires: 1984-02-20
Abstract
No abstract record available.
Inventors
- 👤 Induni Giovanni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:41
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/02; H04B1/03; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A RADIO SYSTEM, A HIGH-FREQUENCY APPARATUS, A SUBSTANTIALLY CLOSED HOLLOW MEMBER CONSISTING OF ELECTRICALLY CONDUCTING MATERIAL AND BEING SYMMETRICAL IN RESPECT TO AT LEAST ONE SYMMETRY PLANE, SAID MEMBER ARRANGED TO ENCLOSE SAID APPARATUS ON SUBSTANTIALLY ALL SIDES AND BEING PROVIDED WITH AN ENDLESS INSULATING GAP COINCIDING WITH SAID PLANE, TO PROVIDE A PAIR OF SEPARATE RADIATING SECTIONS FORMING A DOUBLET ANTENNA, AND A PAIR OF FEEDING LINES CONNECTING SAID APPARATUS TO CENTRAL FEEDING POINTS UPON SAID SECTIONS ON THE OPPOSITE SIDES OF SAID PLANE, SAID LINES HAVING AN EFFECTIVE ELECTRICAL LENGTH SUCH
Claim 2
Dependent Claim
94 words
IN A RADIO SYSTEM, A HIGH-FREQUENCY APPARATUS, A SUBSTANTIALLY CLOSED HOLLOW MEMBER CONSISTING OF ELECTRICALLY CONDUCTING MATERIAL AND BEING SYMMETRICAL IN RESPECT TO AT LEAST ONE SYMMETRY PLANE, SAID MEMBER ARRANGED TO ENCLOSE SAID APPARATUS ON SUBSTANTIALLY ALL SIDES AND BEING PROVIDED WITH AN ENDLESS INSULATING GAP COINCIDING WITH SAID PLANE, TO PROVIDE A PAIR OF SEPARATE RADIATING SECTIONS FORMING A DOUBLET ANTENNA, AND A PAIR OF FEEDING LINES CONNECTING SAID APPARATUS TO CENTRAL FEEDING POINTS UPON SAID SECTIONS ON THE OPPOSITE SIDES OF SAID PLANE, SAID LINES HAVING AN EFFECTIVE ELECTRICAL LENGTH SUCH
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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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |