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Patent US3449587A successfully refreshed from Google Patents.
US3449587A
Expired / Lapsed
US
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Fibre optic scanner device for navigational instruments
Assignee: Kollsman Instrument Corp
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Filing: 1965-02-11
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Granted: 1969-06-10
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Expires: 1985-02-11
Abstract
No abstract record available.
Inventors
- 👤 John W Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:15
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/78; G01S3/782; G01S3/785; G01S3/786; G01S3/7867; G02; G02B; G02B26/00; G02B26/08; G02B26/10; G02B26/103; G02B6/00; G02B2006/0098
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |