Patent US3277484A successfully refreshed from Google Patents.
US3277484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft flight instrument system
Assignee: AVIATION INSTRUMENT Manufacturing CORP
•
Filing: 1963-06-13
•
Granted: 1966-10-04
•
Expires: 1983-06-13
Abstract
No abstract record available.
Inventors
- 👤 Dunbar W Bostwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:58
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
150 words
A DISPLAY DEVICE FOR THE FLIGHT INSTRUMENT SYSTEM OF AN AIRCRAFT WHICH SYSTEM PRODUCES A FIRST SIGNAL CORRESPONDING TO THE DEVIATION IN AZIMUTH OF THE AIRCRAFT FROM A RADIO BEAM SIGNAL AND SECOND AND THIRD SIGNALS CORRESPONDING TO THE RESPECTIVE DIRECTION OF FLIGHT OF SAID AIRCRAFT TO OR FROM SAID RADIO BEAM SIGNAL, SAID DISPLAY DEVICE COMPRISING A FIRST INDICATOR MEANS RESPONSIVE TO SAID FIRST SIGNAL FOR PRODUCING AN INDICATION CORRESPONDING TO THE DEVIATION IN AZIMUTH OF THE AIRCRAFT WITH RESPECT TO SAID RADIO BEAM SIGNAL, SECOND INDICATOR MEANS RESPONSIVE TO SAID SECOND AND THIRD SIGNALS FOR PRODUCING AN INDICATION RESPECTIVELY CORRESPONDING TO THE DIRECTION OF AIRCRAFT FLIGHT TO OR FROM THE RADIO BEAM SIGNAL WHEN SAID FIRST SIGNAL IS BEING PRODUCED, AND MEANS RESPONSIVE TO THE ABSENCE OF SAID FIRST SIGNAL OPERATING BOTH SAID FIRST AND SECOND INDICATOR MEANS TO PRODUCE INDICATIONS REPRESENTING THE ABSENCE OF THE FIRST SIGNAL.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |