US3443320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic gyrocompass
Assignee: Boeing North American Inc
•
Filing: 1964-09-21
•
Granted: 1969-05-13
•
Expires: 1984-09-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Boltinghouse
- 👤 John M Slater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:19
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/04; G01C19/16; G01C19/24; G01C19/34; G01C19/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB129724A
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US2048834A
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US2255899A
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US2850905A
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US2972195A
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US2976618A
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US3209602A
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US3173216A
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US3253472A
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US3229376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |