US3530301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonlinear optical devices employing optimized focusing
Assignee: AT&T Inc
•
Filing: 1968-03-14
•
Granted: 1970-09-22
•
Expires: 1988-03-14
Abstract
No abstract record available.
Inventors
- 👤 Gary D Boyd
- 👤 David A Kleinman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:52
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/39; G02F1/353; G02F1/3534
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3297875A
Cited
US3235813A
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US3201709A
Cited
US3387204A
Cited
US3267385A
Cited
US3364432A
Cited
US3364433A
Cited
US3392368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |