US3503300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High firing rate hypervelocity gun and ammunition therefor
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1967-09-01
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Granted: 1970-03-31
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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
2026-11-05 21:38
CPC Classifications
F; F41; F41A; F41A9/00; F41A9/01; F41A9/24; F41A9/26; F41A9/27; F41A1/00; F41A1/02; F41A21/00; F41A21/12; F41A9/38; F41A9/46
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) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |