US2850250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine powered convertible aircraft
Assignee: Individual
•
Filing: 1955-04-18
•
Granted: 1958-09-02
•
Expires: 1975-04-18
Abstract
No abstract record available.
Inventors
- 👤 Bedford A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:45
CPC Classifications
F; F02; F02C; F02C3/00; F02C3/04; F02C3/06; F02C3/073; F02C3/08; F02C3/085
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US989834A
Cited
US2658700A
Cited
US2461435A
Cited
US2460523A
Cited
FR1003735A
Cited
US2619797A
Cited
US2648491A
Cited
GB724176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |