Patent US3401879A successfully refreshed from Google Patents.
US3401879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Navigational computer
Assignee: Individual
•
Filing: 1965-05-14
•
Granted: 1968-09-17
•
Expires: 1985-05-14
Abstract
No abstract record available.
Inventors
- 👤 Close Garth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:06
CPC Classifications
G; G06; G06G; G06G1/00; G06G1/0005; G06G1/0052
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US111327A
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US2390622A
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GB189722101A
Cited
US652814A
Cited
US1161358A
Cited
US1535917A
Cited
US1870655A
Cited
GB508923A
Cited
US2256116A
Cited
US2452241A
Cited
US2916203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |