US3452445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of freeze-drying technique to make ultra-fine oxidizer for use in solid propellants
Assignee: United States Department of the Army
•
Filing: 1967-08-15
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Granted: 1969-07-01
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Expires: 1987-08-15
Abstract
No abstract record available.
Inventors
- 👤 James H Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:15
CPC Classifications
F; F26; F26B; F26B5/00; F26B5/04; F26B5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1970956A
Cited
US2066302A
Cited
US2225774A
Cited
US2163996A
Cited
US2682872A
Cited
US2885788A
Cited
US3195547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |