US3389227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching system
Assignee: AT&T Inc
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Filing: 1965-02-05
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Granted: 1968-06-18
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Expires: 1985-02-05
Abstract
No abstract record available.
Inventors
- 👤 John M Catterall
- 👤 Eugene D Masucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:13
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/0004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN COMBINATION IN A COMMUNICATION SWITCHING SYSTEM, SWITCHING MEANS CONTROL MEANS FOR CONTROLLING SAID SWITCHING MEANS RESPONSIVE TO CALLS OF A PLURALITY OF DIFFERENT PREFERENCE LEVELS, COMMUNICATION PATHS CONNECTED TO SAID SWITCHING MEANS, STORAGE MEANS INTERCONNECTED WITH SAID COMMUNICATION PATHS FOR STORING THE PREFERENCE LEVEL OF EACH CALL EMPLOYING THE RESPECTIVE PATHS, STATUS MEANS INTERCONNECTABLE WITH A GROUP OF SAID PATHS TO INDICATE THE LOWEST PREFERENCE LEVEL STORED IN SAID STORAGE MEANS OF SAID GROUP OF PATHS, AND MEANS INCLUDED IN SAID CONTROL MEANS AND RESPONSIVE TO SAID STATUS MEANS TO SELECT ONE PATH OF SAID GROUP OF PATHS.
Claim 2
Dependent Claim
99 words
IN COMBINATION IN A COMMUNICATION SWITCHING SYSTEM, SWITCHING MEANS CONTROL MEANS FOR CONTROLLING SAID SWITCHING MEANS RESPONSIVE TO CALLS OF A PLURALITY OF DIFFERENT PREFERENCE LEVELS, COMMUNICATION PATHS CONNECTED TO SAID SWITCHING MEANS, STORAGE MEANS INTERCONNECTED WITH SAID COMMUNICATION PATHS FOR STORING THE PREFERENCE LEVEL OF EACH CALL EMPLOYING THE RESPECTIVE PATHS, STATUS MEANS INTERCONNECTABLE WITH A GROUP OF SAID PATHS TO INDICATE THE LOWEST PREFERENCE LEVEL STORED IN SAID STORAGE MEANS OF SAID GROUP OF PATHS, AND MEANS INCLUDED IN SAID CONTROL MEANS AND RESPONSIVE TO SAID STATUS MEANS TO SELECT ONE PATH OF SAID GROUP OF PATHS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |