US2699833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helicopter automatic torque compensator
Assignee: RTX Corp
•
Filing: 1953-06-03
•
Granted: 1955-01-18
•
Expires: 1973-06-03
Abstract
No abstract record available.
Inventors
- 👤 Harry T Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:38
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2491191A
Cited
US2471821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-17 | 1958-07-19 | 1959-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-17 | 1962-07-19 | 1963-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-17 | 1966-07-19 | 1967-01-18 | $7700.00 | Window Closed / Lapsed |