US3449752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helical antenna electromagnetically coupled to resonant line
Assignee: Thales SA
•
Filing: 1966-10-06
•
Granted: 1969-06-10
•
Expires: 1986-10-06
Abstract
No abstract record available.
Inventors
- 👤 Erich Spitz
- 👤 Rene Romeas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:18
CPC Classifications
H; H01; H01Q; H01Q11/00; H01Q11/02; H01Q11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
AN END FIRE RADIATOR ELEMENT COMPRISING: A HELICAL RADIATING STRUCTURE HAVING AN AXIS; A BIFILAR RESONANT LINE EXTENDING COAXIALLY WITH SAID STRUCTURE; MEANS FOR COUPLING SAID LINE TO A FEEDER; SAID LINE HAVING TWO PARALLEL CONDUCTORS HAVING RESPECTIVE FIRST AND SECOND ENDS; SAID
Claim 2
Dependent Claim
43 words
AN END FIRE RADIATOR ELEMENT COMPRISING: A HELICAL RADIATING STRUCTURE HAVING AN AXIS; A BIFILAR RESONANT LINE EXTENDING COAXIALLY WITH SAID STRUCTURE; MEANS FOR COUPLING SAID LINE TO A FEEDER; SAID LINE HAVING TWO PARALLEL CONDUCTORS HAVING RESPECTIVE FIRST AND SECOND ENDS; SAID
References Cited (Backward Citations)
US3263233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |