US3378770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for quadrature modulation of ternary signals with auxiliary oscillation for use in carrier regeneration at receiver
Assignee: Telecommunications Radioelectriques et Telephoniques SA TRT
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Filing: 1964-08-03
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Granted: 1968-04-16
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Expires: 1984-08-03
Abstract
No abstract record available.
Inventors
- 👤 Daguet Jacques Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:59
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/38; H04L25/40; H04L25/49; H04B; H04B1/00; H04B1/68; H04L25/4917; H04L25/4923; H04L27/00; H04L27/18; H04L27/20; H04L27/2032; H04L27/2053; H04L27/206; H04L27/2067; H04L27/2071; H04L27/22; H04L27/227; H04L27/2275
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |