Patent US2869117A successfully refreshed from Google Patents.
US2869117A
Expired / Lapsed
US
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Course and speed indicating system
Assignee: General Precision Laboratory Inc
•
Filing: 1948-09-18
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Granted: 1959-01-13
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Expires: 1968-09-18
Abstract
No abstract record available.
Inventors
- 👤 France B Berger
- 👤 William J Tull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:34
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/58; G01S13/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2489288A
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US2435615A
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US2468751A
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US2427029A
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US2459074A
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US2426228A
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US2482162A
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US2435988A
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US2464258A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |