US2289704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft wing
Assignee: Individual
•
Filing: 1940-02-26
•
Granted: 1942-07-14
•
Expires: 1960-02-26
Abstract
No abstract record available.
Inventors
- 👤 Charles H Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:47
CPC Classifications
B; B64; B64C; B64C21/00; B64C21/02; B64C9/00; B64C9/14; B64C9/16; B64C9/20; B64C2230/00; B64C2230/20; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-07-13 | 1946-01-12 | 1946-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-07-13 | 1950-01-12 | 1950-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-07-13 | 1954-01-12 | 1954-07-14 | $7700.00 | Window Closed / Lapsed |