Patent US3925277A successfully refreshed from Google Patents.
US2828930A
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US
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Electronic apparatus for stabilizing the attitude of moving craft and instruments carried thereby
Assignee: LAFAYETTE M HUGHES
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Filing: 1952-06-21
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Granted: 1958-04-01
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Expires: 1972-06-21
Abstract
No abstract record available.
Inventors
- 👤 Robert J Herbold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:18
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808; G05D1/0816; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1388932A
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US1794690A
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GB352035A
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US2457393A
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US2421192A
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US2489222A
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US2489223A
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US2604601A
Cited
US2630283A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |