Patent US3286955A successfully refreshed from Google Patents.
US3286955A
Expired / Lapsed
US
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Low altitude air defense system and method
Assignee: Individual
•
Filing: 1963-01-28
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Granted: 1966-11-22
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Expires: 1983-01-28
Abstract
No abstract record available.
Inventors
- 👤 John A French
- 👤 Elbert L Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:12
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/30; G; G01; G01S; G01S13/00; G01S13/87
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A SYSTEM FOR DETECTING AND INTERCEPTING LOW ALTITUDE AIRCRAFT COMPRISING: AN ELEVATED ACQUISITION RADAR FOR SCANNING AN AREA OF EXPECTED ATTACK AND THEREBY DETECTING THE PRESENCE OF SAID AIRCRAFT PRIOR TO ITS APPEARANCE ABOVE THE HORIZON; A GROUND LOCATED TARGET TRACKING RADAR FOR TRACKING SAID AIRCRAFT AFTER ITS APPEARANCE ABOVE THE SAID TARGET TRACKING RADAR CONNECTED TO SAID ELEVATED RADAR WHEREBY THE INITIAL POSITION OF SAID TARGET TRACKING RADAR IS CONTROLLED BY SAID ELEVATED RADAR; MEANS RESPONSIVE TO SAID ELEVATED ACQUISITION RADAR FOR LAUNCHING A MISSILE PRIOR TO THE APPEARANCE OF SAID AIRCRAFT ABOVE THE HORIZON; A MISSILE TRACKING RADAR; AND MEANS RESPONSIVE TO SAID TARGET TRACKING RADAR AND SAID MISSILE TRACKING RADAR FOR CONTROLLING THE COURSE OF SAID MISSILE, WHEREBY SAID AIRCRAFT IS INTERCEPTED BY SAID MISSILE.
Claim 2
Independent Claim
128 words
A SYSTEM FOR DETECTING AND INTERCEPTING LOW ALTITUDE AIRCRAFT COMPRISING: AN ELEVATED ACQUISITION RADAR FOR SCANNING AN AREA OF EXPECTED ATTACK AND THEREBY DETECTING THE PRESENCE OF SAID AIRCRAFT PRIOR TO ITS APPEARANCE ABOVE THE HORIZON; A GROUND LOCATED TARGET TRACKING RADAR FOR TRACKING SAID AIRCRAFT AFTER ITS APPEARANCE ABOVE THE SAID TARGET TRACKING RADAR CONNECTED TO SAID ELEVATED RADAR WHEREBY THE INITIAL POSITION OF SAID TARGET TRACKING RADAR IS CONTROLLED BY SAID ELEVATED RADAR; MEANS RESPONSIVE TO SAID ELEVATED ACQUISITION RADAR FOR LAUNCHING A MISSILE PRIOR TO THE APPEARANCE OF SAID AIRCRAFT ABOVE THE HORIZON; A MISSILE TRACKING RADAR; AND MEANS RESPONSIVE TO SAID TARGET TRACKING RADAR AND SAID MISSILE TRACKING RADAR FOR CONTROLLING THE COURSE OF SAID MISSILE, WHEREBY SAID AIRCRAFT IS INTERCEPTED BY SAID MISSILE.
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |