Patent US2275670A successfully refreshed from Google Patents.
Patent US3147479A successfully refreshed from Google Patents.
US3147479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural juxtaposed parabolic reflectors with frequency independent feeds
Assignee: Radiation Inc
•
Filing: 1962-03-01
•
Granted: 1964-09-01
•
Expires: 1982-03-01
Abstract
No abstract record available.
Inventors
- 👤 La Vergne E Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:49
CPC Classifications
H; H01; H01Q; H01Q25/00; H01Q25/02; H01Q3/00; H01Q3/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
AN ANTENNA SYSTEM FOR USE IN MONOPULSE RADAR HAVING WAVELENGTH PROPAGATIONS BETWEEN $1 AND $2, WHERE $1 AND $2 ARE THE SHODTEST AND LONGEST WAVELENGTHS, RESPECTIVELY OF SAID RADAR, COMPRISING FOUR ORTHOGONALLY POSITIONED, SUBSTANTIALLY CO-PLANAR PARABOLIC REFLECTORS, EACH OF SAID REFLECTORS HAVING JUXTAPOSITIONED EDGES WITH TWO OF SAID OTHER REFLECTORS, EACH OF SAID REFLECTORS HAVING AN AXIS OF REVOLUTION, THE AXES OF REVOLUTIONS OF ADJACENT ONES OF SAID REFLECTORS BEING SEPARATED BY AT LEAST
Claim 2
Dependent Claim
74 words
AN ANTENNA SYSTEM FOR USE IN MONOPULSE RADAR HAVING WAVELENGTH PROPAGATIONS BETWEEN $1 AND $2, WHERE $1 AND $2 ARE THE SHODTEST AND LONGEST WAVELENGTHS, RESPECTIVELY OF SAID RADAR, COMPRISING FOUR ORTHOGONALLY POSITIONED, SUBSTANTIALLY CO-PLANAR PARABOLIC REFLECTORS, EACH OF SAID REFLECTORS HAVING JUXTAPOSITIONED EDGES WITH TWO OF SAID OTHER REFLECTORS, EACH OF SAID REFLECTORS HAVING AN AXIS OF REVOLUTION, THE AXES OF REVOLUTIONS OF ADJACENT ONES OF SAID REFLECTORS BEING SEPARATED BY AT LEAST
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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |