US3427617A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal transmitting and receiving system
Assignee: Hazeltine Research Inc
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Filing: 1959-04-21
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Granted: 1969-02-11
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Expires: 1979-04-21
Abstract
No abstract record available.
Inventors
- 👤 Donald Richman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:39
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/26; G01S13/28; G01S13/282; G01S13/284; G01S13/286; G01S13/50; G01S13/58; G01S13/581; G01S13/582; G01S7/00; G01S7/02; G01S7/36
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
A RADAR SYSTEM HAVING A SYSTEM RESPONSE CHARACTERIZED BY A SINGLE LOBE HAVING MONOTONICALLY DECREASING SIDES, IMPROVED RESOLUTION IN RANGE AND VELOCITY, AND IMMUNITY TO INFERENCE SIGNALS COMPRISING: MEANS FOR TRANSMITTING A PULSE OF RADIO-FREQUENEY ENERGY CODED WITH A CUBIC PHASE CHARACTERISTIC; AND MEANS FOR RECEIVING AND DECODING A PLURALITY OF SIGNIALS INCLUDING SAID CODED PULSE, THEREBY TO PROVIDED A SINGLE HIGH PEAK AMPLITUDE OUTPUT PULSE FROM ONLY THOSE OF SAID RECEIVED SIGNALS HAVING FREQUENCY AND PHASE CHARACTERISTICS SUBSTANTIALLY THE SAME AS SAID CODED PULSE.
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) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |