Patent US2449548A successfully refreshed from Google Patents.
US3553705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parabolic reflector antenna
Assignee: Individual
•
Filing: 1968-08-12
•
Granted: 1971-01-05
•
Expires: 1988-08-12
Abstract
Abstract A PARABOLIC REFLECTOR ANTENNA HAVING A FEED SYSTEM WHICH IS AN INTEGRAL PART OF THE REFLECTOR CONTOUR WITH THE FOCAL LINES OR FOCAL CIRCLES BEING COINCIDENT WITH THE LOCUS OF POINTS THAT COMPRISE THE REFLECTOR CONTOUR.
Inventors
- 👤 Albert A Ondrejka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:59
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/12; H01Q19/15
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |