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US3433960A
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Retrodirective optical system
Assignee: National Aeronautics and Space Administration
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Filing: 1966-10-31
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Granted: 1969-03-18
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Expires: 1986-10-31
Abstract
No abstract record available.
Inventors
- 👤 Peter O Minott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:57
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/25; H04B10/2587; H01; H01S; H01S3/00; H01S3/10; H01S3/105; H01S3/106; H01S3/1068
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB873833A
Cited
US3020398A
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US3224330A
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US3150320A
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US3164665A
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US3215842A
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US3338656A
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US3348058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |