US3545226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual solid cryogens for spacecraft refrigeration
Assignee: National Aeronautics and Space Administration
•
Filing: 1969-01-17
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Granted: 1970-12-08
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Expires: 1989-01-17
Abstract
No abstract record available.
Inventors
- 👤 Robert P Caren
- 👤 Robert M Coston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:04
CPC Classifications
F; F17; F17C; F17C3/00; F17C3/02; F17C3/08; F17C3/085; F25; F25D; F25D3/00; F25D3/12; Y; Y10; Y10S; Y10S220/00; Y10S220/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1863958A
Cited
US2671154A
Cited
US3066222A
Cited
US3122004A
Cited
US3350229A
Cited
FR1394155A
Cited
US3289423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |