Patent US3305865A successfully refreshed from Google Patents.
US3305865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Runway image generating apparatus
Assignee: Unisys Corp
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Filing: 1964-06-29
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Granted: 1967-02-21
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 John H Gassler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:06
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
AIRCRAFT INSTRUMENT APPARATUS FOR USE IN LANDING AN AIRCRAFT COMPRISING A CATHODE RAY TUBE, MEANS FOR PRODUCING A FIRST TRACE ON THE FACE OF SAID CATHODE RAY TUBE, MEANS FOR PRODUCING A SECOND TRACE ON SAID CATHODE RAY TUBE, SAID FIRST TRACE BEING REPRESENTATIVE OF THE THRESHOLD OF A REAL WORLD RUNWAY AND SAID SECOND TRACE BEING REPRESENTATIVE OF THE CENTER LINE OF SAID REAL WORLD RUNWAY, MEANS FOR SO ALIGNING SAID FIRST AND SECOND TRACES ON THE FACE OF SAID CATHODE RAY TUBE THAT SAID SECOND TRACE RUNS TOWARD SAID FIRST TRACE, AND MEANS FOR ELIMINATING SAID FIRST TRACE FROM THE FACE OF SAID CATHODE RAY TUBE AND EXTENDING THE LENGTH OF SAID SECOND TRACE WHEN SAID CRAFT IS AT AND BELOW A PREDETERMINED ALTITUDE.
Claim 2
Dependent Claim
126 words
AIRCRAFT INSTRUMENT APPARATUS FOR USE IN LANDING AN AIRCRAFT COMPRISING A CATHODE RAY TUBE, MEANS FOR PRODUCING A FIRST TRACE ON THE FACE OF SAID CATHODE RAY TUBE, MEANS FOR PRODUCING A SECOND TRACE ON SAID CATHODE RAY TUBE, SAID FIRST TRACE BEING REPRESENTATIVE OF THE THRESHOLD OF A REAL WORLD RUNWAY AND SAID SECOND TRACE BEING REPRESENTATIVE OF THE CENTER LINE OF SAID REAL WORLD RUNWAY, MEANS FOR SO ALIGNING SAID FIRST AND SECOND TRACES ON THE FACE OF SAID CATHODE RAY TUBE THAT SAID SECOND TRACE RUNS TOWARD SAID FIRST TRACE, AND MEANS FOR ELIMINATING SAID FIRST TRACE FROM THE FACE OF SAID CATHODE RAY TUBE AND EXTENDING THE LENGTH OF SAID SECOND TRACE WHEN SAID CRAFT IS AT AND BELOW A PREDETERMINED ALTITUDE.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |