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US2856181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doors or closure members for bomb bays or like spaces in the fuselages or wings of aircraft
Assignee: Blackburn and General Aircraft Ltd
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Filing: 1955-04-15
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Granted: 1958-10-14
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Expires: 1975-04-15
Abstract
No abstract record available.
Inventors
- 👤 Fenton George Burrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:43
CPC Classifications
B; B64; B64D; B64D1/00; B64D1/02; B64D1/04; B64D1/06
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) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |