US2643833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Empennage control structure
Assignee: Individual
•
Filing: 1949-09-22
•
Granted: 1953-06-30
•
Expires: 1969-09-22
Abstract
No abstract record available.
Inventors
- 👤 Ambroise Edmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:24
CPC Classifications
B; B64; B64C; B64C5/00; B64C5/10; B64C9/00; Y; Y02; Y02T; Y02T50/00; Y02T50/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR408550A
Cited
US1160021A
Cited
US1974407A
Cited
US1935004A
Cited
US2390939A
Cited
US2347230A
Cited
US2533702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |