US2833496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flight control system
Assignee: Northrop Grumman Corp
•
Filing: 1954-12-13
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Granted: 1958-05-06
•
Expires: 1974-12-13
Abstract
No abstract record available.
Inventors
- 👤 Duane T Mcruer
- 👤 Richard J Kulda
- 👤 Alvin R Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:19
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/0055; G05D1/0061
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2408770A
Cited
US2488286A
Cited
US2464629A
Cited
US2475484A
Cited
US2633315A
Cited
US2707085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |