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Patent US3532827A successfully refreshed from Google Patents.
US3532827A
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Scanner arrangement for identifying circuits changing their states,storing the times of such change,and determining the character of the change in a communication switching system
Assignee: AT&T Inc
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Filing: 1967-10-19
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Granted: 1970-10-06
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Expires: 1987-10-19
Abstract
No abstract record available.
Inventors
- 👤 James C Ewin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:44
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/54; H04Q3/545
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3430001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |