US2698059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helicopter control system
Assignee: Autogiro Company of America
•
Filing: 1953-07-08
•
Granted: 1954-12-28
•
Expires: 1973-07-08
Abstract
No abstract record available.
Inventors
- 👤 Pullin Cyril George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:07
CPC Classifications
B; B64; B64C; B64C13/00; B64C13/24; B64C13/26; B64C13/28; B64C13/30; B64C27/00; B64C27/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1548686A
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US1783011A
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CH155974A
Cited
US2385889A
Cited
US2381417A
Cited
US2445354A
Cited
US2496624A
Cited
US2427982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |