US3447983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acetone treated nitrocellulose-based propellant and process
Assignee: United States Department of the Navy
•
Filing: 1967-07-31
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Granted: 1969-06-03
•
Expires: 1987-07-31
Abstract
No abstract record available.
Inventors
- 👤 Albert T Camp
- 👤 Elmer R Csanady
- 👤 Leonard Danziger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:47
CPC Classifications
C; C06; C06B; C06B21/00; C06B21/0008; C06B21/0091; C06B25/00; C06B25/18; C06B25/24; C06B25/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1916763A
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US1966806A
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US1890241A
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US2210871A
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US3028274A
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US3088858A
Cited
US2967098A
Cited
US2946673A
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US3102834A
Cited
US3037891A
Cited
US3086896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |