US2665859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft with rotary and fixed wings
Assignee: Gyrodyne LLC
•
Filing: 1950-12-19
•
Granted: 1954-01-12
•
Expires: 1970-12-19
Abstract
No abstract record available.
Inventors
- 👤 Papadakos Peter James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:13
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/22; B64C27/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1350456A
Cited
FR616764A
Cited
US1783458A
Cited
US1877902A
Cited
US1957277A
Cited
US2068617A
Cited
US2317340A
Cited
US2410533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |