Patent US3378637A successfully refreshed from Google Patents.
US3378637A
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US
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System for generating single sideband phase modulated telegraphic signals
Assignee: KDDI Corp
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Filing: 1964-06-12
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Granted: 1968-04-16
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Expires: 1984-06-12
Abstract
No abstract record available.
Inventors
- 👤 Kawai Kazuo
- 👤 Kurihara Hiroshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:50
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/18; H04L27/20; H04L27/2032; H04L27/2053; H04L27/206; H04L27/2067; H04L27/2071; B; B04; B04C; B04C5/00; B04C5/24; B04C5/28; H04L27/2057
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 |