US2521346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ammunition feed mechanism for machine guns
Assignee: Bristol Aeroplane Co Ltd
•
Filing: 1944-10-28
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Granted: 1950-09-05
•
Expires: 1964-10-28
Abstract
No abstract record available.
Inventors
- 👤 D Assis-Fonseca Evely Muschamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:12
CPC Classifications
F; F41; F41A; F41A9/00; F41A9/50; F41A9/51
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR690426A
Cited
US2364309A
Cited
US2372750A
Cited
GB555267A
Cited
US2285654A
Cited
US2353639A
Cited
US2403170A
Cited
US2342065A
Cited
US2329308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |