US3371220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical parametric device using third-order nonlinearity
Assignee: AT&T Inc
•
Filing: 1966-10-25
•
Granted: 1968-02-27
•
Expires: 1986-10-25
Abstract
No abstract record available.
Inventors
- 👤 V Paul A Fleury
- 👤 Chandra K N Patel
- 👤 Richart E Slusher
- 👤 Peter A Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:29
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/39
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3309526A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |