Patent US3389341A successfully refreshed from Google Patents.
US3389341A
Expired / Lapsed
US
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Simultaneous photodetector and electrical modulator
Assignee: AT&T Inc
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Filing: 1965-02-09
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Granted: 1968-06-18
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Expires: 1985-02-09
Abstract
No abstract record available.
Inventors
- 👤 Donald E Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:56
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/60; H04B10/66; H04B10/69; H03; H03C; H03C1/00; H03C1/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3040178A
Cited
US3050633A
Cited
US3086122A
Cited
US3229231A
Cited
US3211900A
Cited
US3272988A
Cited
US3321631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |