US3370270A
Expired / Lapsed
US
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Assignee: AT&T Inc
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Filing: 1963-04-10
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Granted: 1968-02-20
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Expires: 1983-04-10
Abstract
No abstract record available.
Inventors
- 👤 Cesareo Orfeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:44
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
APPARATUS FOR SUPPLYING SIGNALS FROM A TRANSMITTER AT CERTAIN SPECIFIED INTERVALS TO ONE AT A TIME OF A PLURALITY OF RECEIVERS, SAID APPARATUS COMPRISING A TRANSMISSION PATH HAVING ONE END CONNECTED TO SAID TRANSMITTER AND HAVING THE OTHER END CONNECTABLE TO SAID RECEIVERS ONE AT A TIME, A SINGLE CIRCUIT FOR CHECKING BUT NOT ADDING IN ANY WAY TO THE SIGNALS SUPPLIED FROM SAID TRANSMITTER TO ANY OF SAID RECEIVERS, AND MEANS FOR COUPLING ONLY THE INPUT OF SAID CIRCUIT TO SAID PATH DURING A CHECKING INTERVAL IN WHICH SIGNALS ARE NOT BEING SUPPLIED FROM SAID TRANSMITTER TO ANY OF SAID RECEIVERS, SAID MEANS FOR COUPLING BEING ADAPTED TO DIRECTLY CONNECT SAID CIRCUIT IN SEQUENCE TO THOSE RECEIVERS TO WHICH SIGNALS HAVE BEEN SUPPLIED FROM SAID TRANSMITTER THEREBY TO DETERMINE WHETHER OR NOT SIGNALS REGISTERED IN SAID RECEIVERS ARE ACCURATE REPRESENTATIONS OF THE SIGNALS TRANSMITTED THERETO.
Claim 2
Dependent Claim
146 words
APPARATUS FOR SUPPLYING SIGNALS FROM A TRANSMITTER AT CERTAIN SPECIFIED INTERVALS TO ONE AT A TIME OF A PLURALITY OF RECEIVERS, SAID APPARATUS COMPRISING A TRANSMISSION PATH HAVING ONE END CONNECTED TO SAID TRANSMITTER AND HAVING THE OTHER END CONNECTABLE TO SAID RECEIVERS ONE AT A TIME, A SINGLE CIRCUIT FOR CHECKING BUT NOT ADDING IN ANY WAY TO THE SIGNALS SUPPLIED FROM SAID TRANSMITTER TO ANY OF SAID RECEIVERS, AND MEANS FOR COUPLING ONLY THE INPUT OF SAID CIRCUIT TO SAID PATH DURING A CHECKING INTERVAL IN WHICH SIGNALS ARE NOT BEING SUPPLIED FROM SAID TRANSMITTER TO ANY OF SAID RECEIVERS, SAID MEANS FOR COUPLING BEING ADAPTED TO DIRECTLY CONNECT SAID CIRCUIT IN SEQUENCE TO THOSE RECEIVERS TO WHICH SIGNALS HAVE BEEN SUPPLIED FROM SAID TRANSMITTER THEREBY TO DETERMINE WHETHER OR NOT SIGNALS REGISTERED IN SAID RECEIVERS ARE ACCURATE REPRESENTATIONS OF THE SIGNALS TRANSMITTED THERETO.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |