US3417474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyrocompass
Assignee: General Precision Systems Inc
•
Filing: 1965-10-19
•
Granted: 1968-12-24
•
Expires: 1985-10-19
Abstract
No abstract record available.
Inventors
- 👤 John L Evans
- 👤 Hugh E Riordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:18
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/34; G01C19/38; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229; Y10T74/1257
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191101024A
Cited
US1671583A
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US1793142A
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US2263232A
Cited
DE842272C
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US3001290A
Cited
US2966744A
Cited
US3018142A
Cited
US3171696A
Cited
US3239283A
Cited
US3339421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |