US2582348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for aircraft control surfaces
Assignee: Northrop Grumman Corp
•
Filing: 1946-07-08
•
Granted: 1952-01-15
•
Expires: 1966-07-08
Abstract
No abstract record available.
Inventors
- 👤 John K Northrop
- 👤 Thomas A Feeney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:44
CPC Classifications
B; B64; B64C; B64C13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1729850A
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US2191842A
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US2354042A
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US2173538A
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US2393892A
Cited
GB557259A
Cited
US2445343A
Cited
GB574151A
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US2397978A
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US2412647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |