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US3471856A
Expired / Lapsed
US
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Position location and data collection system and method
Assignee: National Aeronautics and Space Administration
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Filing: 1967-05-22
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Granted: 1969-10-07
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Expires: 1987-05-22
Abstract
No abstract record available.
Inventors
- 👤 Charles R Laughlin Jr
- 👤 Gay E Hilton
- 👤 Richard C Lavigne
- 👤 Roger C Hollenbaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:42
CPC Classifications
G; G01; G01S; G01S5/00; G01S5/0009; G01S5/02; G01S5/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2606317A
Cited
US3054100A
Cited
US3378845A
Cited
US3325809A
Cited
US3369236A
Cited
US3400399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |