US3253259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural channel data transmission system having means for utilizing only the operative channels
Assignee: AT&T Inc
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Filing: 1961-09-19
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Granted: 1966-05-24
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Expires: 1981-09-19
Abstract
No abstract record available.
Inventors
- 👤 John Z Jacoby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:44
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/02; H03; H03F; H03F3/00; H03F3/68; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A DATA TRANSMISSION SYSTEM COMPRISING A TRANSMITTING AND RECEIVING CIRCUIT, A TWO-CHANNEL TRANSMISSION PATH CONNECTING SAID TRANSMITTING AND RECEIVING CIRCUITS, SAID TRANSMITTING CIRCUIT INCLUDING FIRST AND SECOND MEANS EACH FOR TRANSMITTING ONE-HALF OF THE INFORMATION TO BE TRANSMITTED ALONG A DIFFERENT ONE OF SAID TWO CHANNELS, SAID RECEIVING CIRCUIT INCLUDING FIRST AND SECOND MEANS EACH FOR RECEIVING THE INFORMATION TRANSMITTED ALONG A DIFFERENT ONE OF SAID TWO CHANNELS, AND MEANS OPERATIVE IN RESPONSE TO EITHER OF SAID TWO CHANNELS BECOMING INOPERATIVE FOR CONTROLLING SAID FIRST AND SECOND TRANSMITTING MEANS TO BOTH TRANSMIT ALTERNATELY ALONG THE OTHER ONE OF SAID TWO CHANNELS AND FOR CONTROLLING SAID FIRST AND SECOND RECEIVING MEANS TO ALTERNATELY RECEIVE THE INFORMATION TRANSMITTED ALONG SAID OTHER CHANNEL.
Claim 2
Dependent Claim
120 words
A DATA TRANSMISSION SYSTEM COMPRISING A TRANSMITTING AND RECEIVING CIRCUIT, A TWO-CHANNEL TRANSMISSION PATH CONNECTING SAID TRANSMITTING AND RECEIVING CIRCUITS, SAID TRANSMITTING CIRCUIT INCLUDING FIRST AND SECOND MEANS EACH FOR TRANSMITTING ONE-HALF OF THE INFORMATION TO BE TRANSMITTED ALONG A DIFFERENT ONE OF SAID TWO CHANNELS, SAID RECEIVING CIRCUIT INCLUDING FIRST AND SECOND MEANS EACH FOR RECEIVING THE INFORMATION TRANSMITTED ALONG A DIFFERENT ONE OF SAID TWO CHANNELS, AND MEANS OPERATIVE IN RESPONSE TO EITHER OF SAID TWO CHANNELS BECOMING INOPERATIVE FOR CONTROLLING SAID FIRST AND SECOND TRANSMITTING MEANS TO BOTH TRANSMIT ALTERNATELY ALONG THE OTHER ONE OF SAID TWO CHANNELS AND FOR CONTROLLING SAID FIRST AND SECOND RECEIVING MEANS TO ALTERNATELY RECEIVE THE INFORMATION TRANSMITTED ALONG SAID OTHER CHANNEL.
References Cited (Backward Citations)
US2694140A
Cited
US2956124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |