US2913196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical take-off airplane
Assignee: Individual
•
Filing: 1955-02-10
•
Granted: 1959-11-17
•
Expires: 1975-02-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Dale W Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:20
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0016; B64C29/0025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR559793A
Cited
US2123657A
Cited
US2431293A
Cited
US2504137A
Cited
US2481379A
Cited
US2419780A
Cited
GB623885A
Cited
US2561291A
Cited
US2660383A
Cited
US2712420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |