US3089921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiplex message transmission
Assignee: AT&T Inc
•
Filing: 1960-07-07
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Granted: 1963-05-14
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Expires: 1980-07-07
Abstract
No abstract record available.
Inventors
- 👤 Marion E Hines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:59
CPC Classifications
H; H04; H04J; H04J99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
AN ARRANGEMENT FOR TRANSMITTING THE CONTENTS OF A PLURALITY OF MESSAGE CHANNELS BETWEEN A PAIR OF TERMINALS WHICH COMPRISES TIMING MEANS FOR ESTABLISHING A SUCCESSION OF RECURRING GROUPS OF TIME SLOTS AND MEANS FOR COMBINING SAMPLES OF THE CONTENTS OF ALL OF SAID MESSAGE CHANNELS IN ALL OF THE TIME SLOTS OF EACH OF SAID GROUPS TO FORM A RESPECTIVELY DIFFERENT LINEAR SUM AND DIFFERENCE COMBINATION IN EACH TIME SLOT OF EVERY GROUP.
Claim 2
Dependent Claim
73 words
AN ARRANGEMENT FOR TRANSMITTING THE CONTENTS OF A PLURALITY OF MESSAGE CHANNELS BETWEEN A PAIR OF TERMINALS WHICH COMPRISES TIMING MEANS FOR ESTABLISHING A SUCCESSION OF RECURRING GROUPS OF TIME SLOTS AND MEANS FOR COMBINING SAMPLES OF THE CONTENTS OF ALL OF SAID MESSAGE CHANNELS IN ALL OF THE TIME SLOTS OF EACH OF SAID GROUPS TO FORM A RESPECTIVELY DIFFERENT LINEAR SUM AND DIFFERENCE COMBINATION IN EACH TIME SLOT OF EVERY GROUP.
References Cited (Backward Citations)
US2657253A
Cited
US2698379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |