US3384837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modulator with emissive diode and photodiode for the modulation of a carrier oscillation with a signal oscillation
Assignee: Siemens AG
•
Filing: 1965-01-21
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Granted: 1968-05-21
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Expires: 1985-01-21
Abstract
No abstract record available.
Inventors
- 👤 Toussaint Hans-Norbert
- 👤 Pospischil Reginhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:37
CPC Classifications
H; H03; H03C; H03C7/00; H03C7/02; H03C1/00; H03C1/34; H03F; H03F3/00; H03F3/04; H03F3/08; H03F3/085; H03G; H03G1/00; H03G1/0005; H03G1/0035; H03G1/0047; H10; H10F; H10F55/00; H10F55/20; H10F55/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2648823A
Cited
US2776367A
Cited
US3040178A
Cited
US3183452A
Cited
US3268733A
Cited
US3304430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |