US3348412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Altitude measurement
Assignee: Individual
•
Filing: 1964-11-27
•
Granted: 1967-10-24
•
Expires: 1984-11-27
Abstract
No abstract record available.
Inventors
- 👤 Tenny D Lode
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:13
CPC Classifications
G; G01; G01L; G01L11/00; G01L13/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
MEANS FOR MEASURING THE RELATIVE ALTITUDE OF AN AIRCRAFT IN FLIGHT ABOVE A SURFACE, SAID AIRCRAFT DERIVING SUBSTANTIAL SUPPORT FROM A DOWNWARDLY DIRECTED DOWN AIR STREAM, INCLUDING MEANS FOR MEASURING AN AIR DATA PARAMETER ASSOCIATED WITH SAID BLOWN AIR STREAM WHICH CHANGES WHEN THE AIRCRAFT IS PROXIMATE THE GROUND IN A FIRST AREA BENEATH THE WING LEVEL OF SAID AIRCRAFT, MEANS FOR MEASURING THE SAME AIR DATA PARAMETER IN A SECOND AREA LESS BENEATH THE WING THAN THE FIRST AREA, AND MEANS FOR COMPARING THE MEASUREMENTS OF THE PARAMETERS AT SAID FIRST AND SECOND AREA.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |