US2678178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Altitude control device for aircraft
Assignee: Bendix Aviation Corp
•
Filing: 1950-06-23
•
Granted: 1954-05-11
•
Expires: 1970-06-23
Abstract
No abstract record available.
Inventors
- 👤 Alan M Maccallum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:44
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1985982A
Cited
US2410502A
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US2415429A
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US2499349A
Cited
US2458784A
Cited
US2474618A
Cited
US2593014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |