US3492645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monitoring circuit for line unit scanned on a time shared basis
Assignee: AT&T Inc
•
Filing: 1966-11-02
•
Granted: 1970-01-27
•
Expires: 1986-11-02
Abstract
No abstract record available.
Inventors
- 👤 Efstratios J Aridas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:42
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/74; G; G06; G06F; G06F11/00; G06F11/07; G06F11/16; G06F11/1608
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3143960A
Cited
US3340506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |