Patent EP0233755A2 successfully refreshed from Google Patents.
US3492913A
Expired / Lapsed
US
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Open chamber gun ammunition feed system
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1968-03-11
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Granted: 1970-02-03
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Expires: 1988-03-11
Abstract
No abstract record available.
Inventors
- 👤 Michael J Barnard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:06
CPC Classifications
F; F41; F41A; F41A9/00; F41A9/35; F41A9/36; F41A9/38; F41A9/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2849921A
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US2831401A
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US2996988A
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US2959106A
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US3140010A
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US3328963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |