Patent US1996309A successfully refreshed from Google Patents.
Patent US3344348A successfully refreshed from Google Patents.
US3344348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus to monitor splice impedance and connection polarities including means to provide continuous signal transmission during cable transfer operations
Assignee: AT&T Inc
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Filing: 1964-12-22
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Granted: 1967-09-26
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Expires: 1984-12-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Irving M Mcnair
- 👤 Nicholas A Strakhov
- 👤 Charles A Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:43
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/22; H04M3/26; H04M3/28; H04M3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
APPARATUS TO FACILIATE AN INTERCHANGE OF MULTICONDUCTOR CABLES COMPRISING A FIRST MULTICONDUCTOR CABLE COMPRISING A PLURALITY OF CONDUCTOR PAIRS HAVING TIP AND RING LEASD, A SECOND MULTICONDUCTOR CABLE COMPRISING A PLURALITY OF CONDUCTOR PAIRS HAVING TIP AND RING LEADS, SAID FIRST AND SECOND CABLES JOINING A CENTRAL OFFICE TO SOME FIELD LOCATION, MEANS TO CONNECT IN PARALLEL THE INDIVIDUAL TIP AND RING LEADS OF CORRESPONDING CONDUCTOR PAIRS OF SAID FIRST AND SECOND CABLE AT SAID CENTRAL OFFICE, FIRST PROBE MEANS TO APPLY A LOW FREQUENCY SIGNAL WITH A PREDETERMINED PHASE TO ONE OF SAID CONDUCTOR PAIRS IN SAID FIRST CABLE AT SAID FIELD LOCATION, SECOND PROBE MEANS AT SAID FIELD LOCATION TO DETECT SAID SIGNAL ON THE CORRESPONDING ONES OF SAID CONDUCTOR PAIRS IN SAID SECOND CABLE, MEANS TO COMPARE THE RESPECTIVE PHASE OF SAID LOW FREQUENCY SIGNAL AS TRANSMITTED AND RECEIVED, MEANS TO INDICATE THE
Claim 2
Dependent Claim
146 words
APPARATUS TO FACILIATE AN INTERCHANGE OF MULTICONDUCTOR CABLES COMPRISING A FIRST MULTICONDUCTOR CABLE COMPRISING A PLURALITY OF CONDUCTOR PAIRS HAVING TIP AND RING LEASD, A SECOND MULTICONDUCTOR CABLE COMPRISING A PLURALITY OF CONDUCTOR PAIRS HAVING TIP AND RING LEADS, SAID FIRST AND SECOND CABLES JOINING A CENTRAL OFFICE TO SOME FIELD LOCATION, MEANS TO CONNECT IN PARALLEL THE INDIVIDUAL TIP AND RING LEADS OF CORRESPONDING CONDUCTOR PAIRS OF SAID FIRST AND SECOND CABLE AT SAID CENTRAL OFFICE, FIRST PROBE MEANS TO APPLY A LOW FREQUENCY SIGNAL WITH A PREDETERMINED PHASE TO ONE OF SAID CONDUCTOR PAIRS IN SAID FIRST CABLE AT SAID FIELD LOCATION, SECOND PROBE MEANS AT SAID FIELD LOCATION TO DETECT SAID SIGNAL ON THE CORRESPONDING ONES OF SAID CONDUCTOR PAIRS IN SAID SECOND CABLE, MEANS TO COMPARE THE RESPECTIVE PHASE OF SAID LOW FREQUENCY SIGNAL AS TRANSMITTED AND RECEIVED, MEANS TO INDICATE THE
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |