US3299769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for ascertaining visibility conditions
Assignee: Individual
•
Filing: 1963-03-08
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Granted: 1967-01-24
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Expires: 1983-03-08
Abstract
No abstract record available.
Inventors
- 👤 Donald J Byers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:28
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/49; G01N21/53; G01N21/538; B; B64; B64F; B64F1/00; B64F1/18; Y; Y02; Y02T; Y02T50/00; Y02T50/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
METHOD FOR MEASURING ATMOSPHERIC VISIBILITY CONDITIONS FOR THE INFORMATION OF AIRBORNE AIRCRAFT PRIOR TO TOUCHDOWN, COMPRISING PROJECTING A DIRECTED BEAM OF RADIANT ENERGY THROUGH THE SPACE EXTENDING SUBSTANTIALLY FROM THE INTERSECTION OF THE GLIDE SLOPE OF SAID AIRCRAFT WITH THE MINIMUM ALTITUDE LEVEL TO THE POINT OF TOUCHDOWN, AND TAKING A SERIES OF OBSERVATIONS, OF SEVERAL POINTS PROGRESSIVELY SPACED ALONG SAID SLOPE WITHIN SAID SPACE, OF THE SCATTERED RERADIATED ENERGY FROM SAID BEAM, PASSING THROUGH SAID SPACE, SAID OBSERVATIONS BEING TAKEN AT AN ANGLE TO THE DIRECTION OF SAID BEAM.
Claim 2
Dependent Claim
90 words
METHOD FOR MEASURING ATMOSPHERIC VISIBILITY CONDITIONS FOR THE INFORMATION OF AIRBORNE AIRCRAFT PRIOR TO TOUCHDOWN, COMPRISING PROJECTING A DIRECTED BEAM OF RADIANT ENERGY THROUGH THE SPACE EXTENDING SUBSTANTIALLY FROM THE INTERSECTION OF THE GLIDE SLOPE OF SAID AIRCRAFT WITH THE MINIMUM ALTITUDE LEVEL TO THE POINT OF TOUCHDOWN, AND TAKING A SERIES OF OBSERVATIONS, OF SEVERAL POINTS PROGRESSIVELY SPACED ALONG SAID SLOPE WITHIN SAID SPACE, OF THE SCATTERED RERADIATED ENERGY FROM SAID BEAM, PASSING THROUGH SAID SPACE, SAID OBSERVATIONS BEING TAKEN AT AN ANGLE TO THE DIRECTION OF SAID BEAM.
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |