US3684631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass armor fabrication
Assignee: Textron Inc
•
Filing: 1969-12-12
•
Granted: 1972-08-15
•
Expires: 1989-12-12
Abstract
Abstract AN ARMOR FABRICATION ADAPTED TO DEFEAT SHAPED CHARGE PROJECTILES COMPRISING LAMINAE CONSISTING OF A SERIES OF DISCUS SHAPED PLATELETS OF GLAS, CERAMICS, OR MATERIAL HAVING SIMILAR PROPERTIES RETAINED TOGETHER IN A LAYERED OVERLAPPING GEOMETRIC PATTERN, SUCH THAT NO BODY FREE PATH EXISTS THROUGH THE ARMOR. THE PLATELETS ARE PREFERABLY OF BI-CONICAL CONFIGURATION.
Inventors
- 👤 Jack D Dunbar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:33
CPC Classifications
F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; F41H5/0414; F41H5/0428; F41H5/0492; Y; Y10; Y10S; Y10S428/00; Y10S428/911; Y10T; Y10T428/00; Y10T428/16; Y10T428/162; Y10T428/24; Y10T428/29; Y10T428/31504; Y10T428/31551; Y10T428/31616
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |