Patent US4477819A successfully refreshed from Google Patents.
Patent US2262033A successfully refreshed from Google Patents.
US2262033A
Expired / Lapsed
US
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Aircraft flight indicator and control system therefor
Assignee: Sperry Gyroscope Co Inc
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Filing: 1936-09-17
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Granted: 1941-11-11
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Expires: 1956-09-17
Abstract
No abstract record available.
Inventors
- 👤 Francis L Moseley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:07
CPC Classifications
G; G01; G01C; G01C23/00; G01D; G01D7/00; G01D2207/00; G01D2207/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-11-10 | 1945-05-12 | 1945-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-11-10 | 1949-05-12 | 1949-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-11-10 | 1953-05-12 | 1953-11-11 | $7700.00 | Window Closed / Lapsed |