US2885792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grounded aviation trainer for rotary wing aircraft
Assignee: Link Aviation Inc
•
Filing: 1954-03-31
•
Granted: 1959-05-12
•
Expires: 1974-03-31
Abstract
No abstract record available.
Inventors
- 👤 Harold S Hemstreet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:41
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/46
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |