US3446111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recoilless open chamber gun
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1967-09-01
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Granted: 1969-05-27
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Expires: 1987-09-01
Abstract
No abstract record available.
Inventors
- 👤 David Dardick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:49
CPC Classifications
F; F41; F41A; F41A9/00; F41A9/01; F41A9/24; F41A9/26; F41A9/27; F41A1/00; F41A1/08; F41A9/38; F41A9/46; F42; F42B; F42B5/00; F42B5/02; F42B5/045
Claims Analysis
Total Claims: 0
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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) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |