US3408131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for coupling and amplfying light between optical fibers
Assignee: Optics Tech Inc
•
Filing: 1963-11-13
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Granted: 1968-10-29
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Expires: 1983-11-13
Abstract
No abstract record available.
Inventors
- 👤 Narinder S Kapany
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:21
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/29; G02F1/31; G02F1/313; G02F1/3131; G02F3/00; H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/063; H01S3/067; H01S3/06754; H01S3/08; H01S3/081; H01S3/083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3208342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |