US3171126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passive detection and ranging system
Assignee: Giannini Scientific Corp
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Filing: 1961-04-14
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Granted: 1965-02-23
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Expires: 1981-04-14
Abstract
No abstract record available.
Inventors
- 👤 Carl A Wiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:30
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/02; G01S13/00; G01S13/003; G01S13/02; G01S13/06; G01S13/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PASSIVE DETECTION AND RANGING SYSTEM, COMPRISING: REFERENCE ANTENNA MEANS FOR SENSING DIRECT RADIATION PRODUCED BY AN EXTENAL NOISE MODULATED SOURCE AND GENERATING A REFERENCE OUTPUT SIGNAL; SEARCH ANTENNA MEANS FOR SENSING REFLECTED RADIATION FROM A TARGET ILLUMINATED BY SAID EXTERNAL SOURCE RADIATION AND GENERATING A TARGET OUTPUT SIGNAL; MEANS FOR RECEIVING AND AMPLIFYING SAID REFERENCE OUTPUT SIGNAL; MEANS FOR RECEIVING AND AMPLIFYING SAID TARGET OUTPUT SIGNAL; MEANS FOR PROVIDING A DIFFERENTIAL TIME DELAY BETWEEN SAID OUTPUT SIGNALS; AND A CORRELATOR FOR CORRELATING SAID AMPLIFIED REFERENCE AND
Claim 2
Dependent Claim
87 words
A PASSIVE DETECTION AND RANGING SYSTEM, COMPRISING: REFERENCE ANTENNA MEANS FOR SENSING DIRECT RADIATION PRODUCED BY AN EXTENAL NOISE MODULATED SOURCE AND GENERATING A REFERENCE OUTPUT SIGNAL; SEARCH ANTENNA MEANS FOR SENSING REFLECTED RADIATION FROM A TARGET ILLUMINATED BY SAID EXTERNAL SOURCE RADIATION AND GENERATING A TARGET OUTPUT SIGNAL; MEANS FOR RECEIVING AND AMPLIFYING SAID REFERENCE OUTPUT SIGNAL; MEANS FOR RECEIVING AND AMPLIFYING SAID TARGET OUTPUT SIGNAL; MEANS FOR PROVIDING A DIFFERENTIAL TIME DELAY BETWEEN SAID OUTPUT SIGNALS; AND A CORRELATOR FOR CORRELATING SAID AMPLIFIED REFERENCE AND
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |