Patent US1907621A successfully refreshed from Google Patents.
US3849781A
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Radar system
Assignee: United States Department of the Navy
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Filing: 1963-05-31
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Granted: 1974-11-19
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Expires: 1983-05-31
Abstract
Abstract 1. A RADAR SYSTEM CAPABLE OF EFFECTIVE OPERATION IN ANECM ENVIRONMENT, COMPRISING IN COMBINATIN: ANTENNA MEANS, RADAR RECEIVER MEANS, WAVE GUIDE MEANS CONNECTING SAID ANTENNA MEANS TO SAID RADAR RECEIVER MEANS, FIRST MEANS INCLUDED IN SAID WAVE GUIDE BLOCKING SIGNALS OF A PREDETERMINED POLARIZATION FROM RECEPTION BY SAID RADAR RECEIVER MEANS, SECOND MEANS DISPOSED IN SAID WAVE GUIDE MEANS BETWEEN SAID ANTENNA MEANS AND SAID FIRST MEANS FOR CHANGING THE POLARIZATION OF A RECEIVED ECM SIGNAL TO SAID PREDETERMINED POLARIZATION BLOCKED FROM RECEPTION BY SAID RADAR RECEIVER MEANS. D R A W I N G
Inventors
- 👤 E Ort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:30
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/024
Claims Analysis
Total Claims: 0
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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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |