Patent EP0357786A1 successfully refreshed from Google Patents.
US2432408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable landing gear
Assignee: Douglas Aircraft Co Inc
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Filing: 1942-12-07
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Granted: 1947-12-09
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Expires: 1962-12-07
Abstract
No abstract record available.
Inventors
- 👤 Charles S Glasgow
- 👤 Edward F Burton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:57
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/02; H03J5/14; H03J5/22; B; B64; B64C; B64C25/00; B64C25/02; B64C25/08; B64C25/10; B64C25/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2049066A
Cited
GB494557A
Cited
GB526353A
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GB518073A
Cited
GB524929A
Cited
US2280185A
Cited
US2294467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-08 | 1951-06-09 | 1951-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-08 | 1955-06-09 | 1955-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-08 | 1959-06-09 | 1959-12-09 | $7700.00 | Window Closed / Lapsed |