US2769857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic phasing of synchronous multiplex telegraph systems
Assignee: RCA Corp
•
Filing: 1954-02-01
•
Granted: 1956-11-06
•
Expires: 1974-02-01
Abstract
No abstract record available.
Inventors
- 👤 Liguori Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:10
CPC Classifications
H; H04; H04L; H04L7/00; H04L7/0054
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2309622A
Cited
US2520953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |