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US2986723A
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US
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Synchronization in a system of interconnected units
Assignee: AT&T Inc
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Filing: 1960-02-26
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Granted: 1961-05-30
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Expires: 1980-02-26
Abstract
No abstract record available.
Inventors
- 👤 George P Darwin
- 👤 Robert C Prim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:00
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/06; H04J3/0635; H04J3/0679; H04L; H04L7/00; H04L7/04; H04L7/10; H04J3/0638; H04J3/0641
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) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |