Patent US3447086A successfully refreshed from Google Patents.
US3447086A
Expired / Lapsed
US
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Rectangular-code regenerator
Assignee: NEC Corp
•
Filing: 1964-07-22
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Granted: 1969-05-27
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Expires: 1984-07-22
Abstract
No abstract record available.
Inventors
- 👤 Sukehiro Ito
- 👤 Seijiro Yokoyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:18
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H04L25/06; H04L25/20; H04L27/00; H04L27/18; H04L27/20; H04L27/2032; H04L27/2035; H04L27/2039; H04L27/22; H04L27/227; H04L27/233; H04L27/2334; H04L27/26; H04L27/2601; H04L27/2626; H04L27/2627; H04L27/2637; H04L27/2647; H04L27/2649; H04L27/2653
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) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |