Patent US3223976A successfully refreshed from Google Patents.
US3223976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data communication system
Assignee: AT&T Inc
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Filing: 1961-05-26
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Granted: 1965-12-14
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Expires: 1981-05-26
Abstract
No abstract record available.
Inventors
- 👤 Henry H Abbott
- 👤 Jr Alfred B Brown
- 👤 Wallace A Depp
- 👤 Renato D Fracassi
- 👤 Robert D Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:26
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/08; G06F11/10; G06F11/1008; G06F11/1012; G06F11/104; H; H04; H04L; H04L12/00; H04L12/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A DATA COMMUNCATION SYSTEM COMPRISING A PLURALITY OF SWITCHING CENTERS, A PLURALITY OF TRUNKS INTERCONNECTING SAID SWITCHING CENTERS FOR TRANSFERRING MESSAGES EACH HAVING A PLURALITY OF DATA BITS BETWEEN SAID SWITCHING CENTERS, MEANS FOR CONNECTING A SOURCE OF DATA TO A FIRST ONE OF SAID SWITCHING CENTERS, SAID FIRST SWITCHING CENTER COMPRISING STORAGE MEANS, MEANS FOR TRANSFERRING MESSAGES IN BULK FORM FROM SAID SOURCE TO DISCRETE PORTIONS OF SAID STORAGE MEANS, MEANS FOR TRANSFERRING ONE BIT OF EACH STORED MESSAGE TO CORRESPONDING PRESELECTED TRUNKS IN SELECTED DISCRETE TIME INTERVALS OF A RECURRENT CYCLE OF TIME INTERVALS, AND MEANS FOR TRANSFERRING TO SAID STORAGE MEANS ONE BIT OF EACH INCOMING MESSAGE TRANSMITTED OVER SAID TRUNKS IN OTHER SELECTED DISCRETE TIME INTERVALS OF SAID RECURRENT CYCLE.
Claim 2
Dependent Claim
124 words
A DATA COMMUNCATION SYSTEM COMPRISING A PLURALITY OF SWITCHING CENTERS, A PLURALITY OF TRUNKS INTERCONNECTING SAID SWITCHING CENTERS FOR TRANSFERRING MESSAGES EACH HAVING A PLURALITY OF DATA BITS BETWEEN SAID SWITCHING CENTERS, MEANS FOR CONNECTING A SOURCE OF DATA TO A FIRST ONE OF SAID SWITCHING CENTERS, SAID FIRST SWITCHING CENTER COMPRISING STORAGE MEANS, MEANS FOR TRANSFERRING MESSAGES IN BULK FORM FROM SAID SOURCE TO DISCRETE PORTIONS OF SAID STORAGE MEANS, MEANS FOR TRANSFERRING ONE BIT OF EACH STORED MESSAGE TO CORRESPONDING PRESELECTED TRUNKS IN SELECTED DISCRETE TIME INTERVALS OF A RECURRENT CYCLE OF TIME INTERVALS, AND MEANS FOR TRANSFERRING TO SAID STORAGE MEANS ONE BIT OF EACH INCOMING MESSAGE TRANSMITTED OVER SAID TRUNKS IN OTHER SELECTED DISCRETE TIME INTERVALS OF SAID RECURRENT CYCLE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |