US3149226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glide slope memorizing apparatus
Assignee: Unisys Corp
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Filing: 1963-05-10
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Granted: 1964-09-15
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Expires: 1983-05-10
Abstract
No abstract record available.
Inventors
- 👤 Francis S Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:22
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607; G05D1/0653; G05D1/0676; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
81 words
IN AN AIRCRAFT LANDING CONTROL SYSTEM HAVING A MEMORIZING CIRCUIT FOR STORING A SIGNAL REPRESENTING THE PATH OF AN AIRCRAFT ABOVE A PREDETERMINED ALTITUDE, APPARATUS COMPRISING MEANS FOR PRODUCING A SIGNAL REPRESENTATIVE OF CRAFT MOTION WITH RESPECT TO A DEFINED COURSE, AND MEANS ADAPTED TO RECEIVE THE CRAFT MOTION SIGNAL BEING RESPONSIVE TO THAT SIGNAL TO INCREASE AND DECREASE THE ABILITY OF SAID MEMORIZING CIRCUIT TO FOLLOW CHANGES IN THE PATH SIGNAL WHEN THE CRAFT MOTION SIGNAL RESPECTIVELY DECREASES AND INCREASES.
References Cited (Backward Citations)
US2987275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |