US2489257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system and landing gear for airborne components
Assignee: United States Department of the Navy
•
Filing: 1946-08-01
•
Granted: 1949-11-29
•
Expires: 1966-08-01
Abstract
No abstract record available.
Inventors
- 👤 Howard S Bean
- 👤 Francis C Morey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:13
CPC Classifications
B; B64; B64D; B64D1/00; B64D1/02; B64D1/08; B64D1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US603689A
Cited
DE371893C
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US1251896A
Cited
FR601304A
Cited
US1895256A
Cited
US1920507A
Cited
US2077910A
Cited
US2087458A
Cited
US2426585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |