US2630985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helicopter stabilizer
Assignee: RTX Corp
•
Filing: 1950-12-07
•
Granted: 1953-03-10
•
Expires: 1970-12-07
Abstract
No abstract record available.
Inventors
- 👤 James R Sherry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:30
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808; G05D1/0858; B; B64; B64C; B64C27/00; B64C27/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1385784A
Cited
US1836681A
Cited
GB425645A
Cited
US2120717A
Cited
US2225002A
Cited
GB576120A
Cited
US2415622A
Cited
US2424882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |