US3464762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical wave modulator
Assignee: AT&T Inc
•
Filing: 1965-12-16
•
Granted: 1969-09-02
•
Expires: 1985-12-16
Abstract
No abstract record available.
Inventors
- 👤 Dawon Kahng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:03
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/015; G02F1/025; G02F1/03; G02F1/035; G02F1/0151; G02F1/0154
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA584593A
Cited
US1879138A
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US3094436A
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US3102201A
Cited
US3208342A
Cited
US3311845A
Cited
US3290619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |