Patent US3267858A successfully refreshed from Google Patents.
US3267858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of casting staple-containing propellant grains and grain
Assignee: Individual
•
Filing: 1965-10-04
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Granted: 1966-08-23
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Expires: 1985-10-04
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Nix
- 👤 Winford G Brock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:27
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/24; C; C06; C06B; C06B21/00; C06B21/0033; C06B21/0058; C06B45/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
49 words
A CAST PERFORATED, STAPLE-CONTAINING PROPELLANT GRAIN COMPRISING A GENERALLY CYLINDRICAL GRAIN BODY HAVING AN AXIALLY DISPOSED PERFORATION EXTENDING THROUGH THE LENGTH THEREOF, A LAYER OF HONEYCOMB MATERIAL CONTAINING STAPLES ALIGNED PERPENDICULAR TO THE SURFACE OF SAID GRAIN BEING IMBEDDED IN SAID GRAIN ADJACENT THE OUTER WALL AND INTERNAL PERFORATION.
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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |