Patent US3204232A successfully refreshed from Google Patents.
US3763291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of forming charges of solid fuels by hydraulic compression
Assignee: Twin Fair Inc
•
Filing: 1951-03-10
•
Granted: 1973-10-02
•
Expires: 1971-03-10
Abstract
Abstract METHOD OF FORMING A SOLID PROPELLANT CHARGE WHEREIN FLUID PRESSURE IS APPLIED AGAINST A CASING THAT CONTAINS THE PROPELLANT INGREDIENTS TO OBTAIN UNIQUE DENSITY GRADIENTS IN THE CHARGE.
Inventors
- 👤 A Loedding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:22
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/24; C; C06; C06B; C06B21/00; C06B21/0033; C06B21/0041
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |