Patent US3390210A successfully refreshed from Google Patents.
US3390210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solventless extrusion process for forming rocket propellant grains
Assignee: United States Department of the Army
•
Filing: 1965-07-16
•
Granted: 1968-06-25
•
Expires: 1985-07-16
Abstract
No abstract record available.
Inventors
- 👤 Richard G Guenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:39
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/24; B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/475; C; C06; C06B; C06B21/00; C06B21/0033; C06B21/0075; B29C48/03
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |