US3537100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for processing nrz pcm signals
Assignee: International Standard Electric Corp
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Filing: 1967-01-25
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Granted: 1970-10-27
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Expires: 1987-01-25
Abstract
No abstract record available.
Inventors
- 👤 Michel Francois Barjot
- 👤 Andre Edouard Joseph Chatelon
- 👤 Pierre Girard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:42
CPC Classifications
H; H04; H04L; H04L7/00; H04L7/02; H04L7/033; H04J; H04J3/00; H04J3/02; H04J3/06; H04J3/0602; H04J3/0617; H04L25/00; H04L25/38; H04L25/40; H04L25/49
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) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |