US3447147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encoder
Assignee: Nortel Networks Ltd
•
Filing: 1965-06-03
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Granted: 1969-05-27
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Expires: 1985-06-03
Abstract
No abstract record available.
Inventors
- 👤 Jacques V Deregnaucourt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:38
CPC Classifications
H; H03; H03M; H03M1/00; H04; H04B; H04B14/00; H04B14/02; H04B14/04; H04B14/046; H04J; H04J3/00; H04J3/16; H04J3/1682; H04J3/1688; H03M1/12; H03M1/34
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 |