US2455838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air frame structure
Assignee: Vinters Armstrongs Ltd
•
Filing: 1945-06-15
•
Granted: 1948-12-07
•
Expires: 1965-06-15
Abstract
No abstract record available.
Inventors
- 👤 Wallis Barnes Neville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:49
CPC Classifications
B; B64; B64C; B64C3/00; B64C3/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1322348A
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US1243041A
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GB125669A
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GB142082A
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US1409982A
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US1426626A
Cited
GB264546A
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US1717390A
Cited
US1985649A
Cited
GB479839A
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US2344131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |