US3444380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic background suppression method and apparatus for a field scanning sensor
Assignee: National Aeronautics and Space Administration
•
Filing: 1966-10-26
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Granted: 1969-05-13
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Expires: 1986-10-26
Abstract
No abstract record available.
Inventors
- 👤 Richard F Maxwell Jr
- 👤 Richard F Higby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:32
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/41; G01S7/414; G01S3/00; G01S3/78; G01S3/781; G01S3/782; G01S3/783; G01S3/784
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2932006A
Cited
US3144555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |