US3135957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Meterological satellite radar
Assignee: Collins Radio Co
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Filing: 1961-03-20
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Granted: 1964-06-02
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Expires: 1981-03-20
Abstract
No abstract record available.
Inventors
- 👤 Paul M Cunningham
- 👤 John F Beckerich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:24
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/88; G01S13/95; G01S13/955; Y; Y02; Y02A; Y02A90/00; Y02A90/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
A PULSED FREQUENCY-MODULATED RADAR SYSTEM FOR MEASURING THE DISTANCES FROM THE EARTH''S SURFACE TO RESPECTIVE REGIONS OF PRECIPITATION INDEPENDENT OF THE DISTANCE OF THE POSITION OF SAID SYSTEM FROM THE EARTH''S SURFACE COMPRISING, TRANSMITTING MEANS FOR RADIATING FREQUENCY-MODULATED SIGNAL TO THE EARTH''S SURFACE, RECEIVING MEANS FOR RECEIVING A PREDOMINANT ECHO SIGNAL FROM SAID EARTH''S SURFACE AND WEAKER ECHO SIGNALS FROM SAID PRECIPITATION, TIMING MEANS FOR ENABLING ALTERNATELY SAID TRANSMITTING MEANS AND SAID RECEIVING MEANS, SAID RECEIVING MEANS INCLUDING MEANS FOR CONVERTING SAID PREDOMINANT ECHO SIGNAL INTO A PREDOMINANT BEAT-FREQUENCY SIGNAL AND SAID WEAKER ECHO SIGNALS INTO WEAKER BEAT-FREQUENCY SIGNALS, SAID BEAT-FREQUENCY SIGNALS HAVING FREQUENCY DIFFER-
References Cited (Backward Citations)
US2537593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |