US3437394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic mirror drive system
Assignee: National Aeronautics and Space Administration
•
Filing: 1966-07-26
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Granted: 1969-04-08
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Expires: 1986-07-26
Abstract
No abstract record available.
Inventors
- 👤 Norman M Hatcher
- 👤 Nelson J Groom
- 👤 Arthur L Newcomb Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:32
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/78; G01S3/782; G01S3/785; G01S3/786; G01S3/7868
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB252387A
Cited
US2922894A
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US3038077A
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US3262364A
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US3215033A
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US3225206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |