Patent US3100893A successfully refreshed from Google Patents.
US3100893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broad band vertical antenna with adjustable impedance matching network
Assignee: Individual
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Filing: 1960-11-30
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Granted: 1963-08-13
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Expires: 1980-11-30
Abstract
No abstract record available.
Inventors
- 👤 Helmut Brueckmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:28
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/06; H01Q9/14; H01Q9/145; H01Q9/16; H01Q9/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
AN ANTENNA SYSTEM FOR VEHICULAR USE COMPRISING: AN ANTENNA INSULATED FROM AND PROJECTING OUTWARDLY FROM THE STRUCTURE OF THE VEHICLE SO AS TO BE ELECTRICALLY EXPOSED TO SPACE, SAID ANTENNA HAVING UPPER AND LOWER SECTIONS; AN INSULATING JACKET ENCASING SAID ANTENNA; A FERRITE CORE; A CABLE CHOKE WOUND AROUND SAID FERRITE CORE AND CONNECTED TO THE LOWER EXTREMITY OF SAID LOWER SECTION; A TAPPED SHUNT COIL HAVING A PLURALITY OF TAPS AND ITS EXTREMITIES CONNECTED IN PARALLEL WITH SAID CABLE CHOKE; A PLURALITY OF IMPEDANCE MATCHING NETWORKS; A SWITCHING MEANS FOR INTERCONNECTING SAID IMPEDANCE MATCHING NETWORKS TO SAID ANTENNA AND FOR CHANGING THE TAP CONNECTIONS ON SAID TAPPED SHUNT COIL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |