US2533548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cockpit cover for airplanes
Assignee: N V Nederlandsche Vliegtuigenfabriek Fokker
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Filing: 1948-05-04
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Granted: 1950-12-12
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Expires: 1968-05-04
Abstract
No abstract record available.
Inventors
- 👤 Willem A J Backer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:54
CPC Classifications
B; B60; B60J; B60J5/00; B60J5/04; B60J5/047; B60J5/0472; B64; B64C; B64C1/00; B64C1/14; B64C1/1476
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) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |