US3123674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
jdsti
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
•
Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:45
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/0004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A DISTRIBUTED TELEPHONE LINE CONCENTRATOR INCLUDING A CENTRAL OFFICE, A PLURALITY OF TRUNKS EXTENDING FROM SAID OFFICE, A GREATER PLURALITY OF SUBSTATIONS REMOTELY LOCATED FROM SAID OFFICE, A PLURALITY OF CONCENTRATOR UNITS INDIVIDUAL TO SAID SUBSTATIONS AND PHYSICALLY DISPOSED CONTIGUOUS TO SAID SUBSTATIONS, SAID UNITS INCLUDING MEANS FOR CONNECTING SAID SUBSTATIONS TO SAID TRUNKS UNDER CONTROL OF SAID CENTRAL OFFICE, MEANS AT SAID UNITS RESPONSIVE TO A SERVICE REQUEST CONDITION AT SAID SUBSTATIONS FOR TRANSMITTING A DISTINCTIVE GROUP OF IDENTIFYING PULSES TO SAID
Claim 2
Dependent Claim
83 words
A DISTRIBUTED TELEPHONE LINE CONCENTRATOR INCLUDING A CENTRAL OFFICE, A PLURALITY OF TRUNKS EXTENDING FROM SAID OFFICE, A GREATER PLURALITY OF SUBSTATIONS REMOTELY LOCATED FROM SAID OFFICE, A PLURALITY OF CONCENTRATOR UNITS INDIVIDUAL TO SAID SUBSTATIONS AND PHYSICALLY DISPOSED CONTIGUOUS TO SAID SUBSTATIONS, SAID UNITS INCLUDING MEANS FOR CONNECTING SAID SUBSTATIONS TO SAID TRUNKS UNDER CONTROL OF SAID CENTRAL OFFICE, MEANS AT SAID UNITS RESPONSIVE TO A SERVICE REQUEST CONDITION AT SAID SUBSTATIONS FOR TRANSMITTING A DISTINCTIVE GROUP OF IDENTIFYING PULSES TO SAID
References Cited (Backward Citations)
US1687669A
Cited
US2235153A
Cited
US2599358A
Cited
US2794121A
Cited
US2894073A
Cited
US2979571A
Cited
US2976367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |