FR630110A - Improvements to telephone systems - Google Patents

Improvements to telephone systems

Info

Publication number
FR630110A
FR630110A FR630110DA FR630110A FR 630110 A FR630110 A FR 630110A FR 630110D A FR630110D A FR 630110DA FR 630110 A FR630110 A FR 630110A
Authority
FR
France
Prior art keywords
telephone systems
telephone
systems
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Application granted granted Critical
Publication of FR630110A publication Critical patent/FR630110A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)
FR630110D 1926-03-26 1927-03-03 Improvements to telephone systems Expired FR630110A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8307/26A GB273015A (en) 1926-03-26 1926-03-26 Improvements in or relating to telephone systems

Publications (1)

Publication Number Publication Date
FR630110A true FR630110A (en) 1927-11-23

Family

ID=9850006

Family Applications (1)

Application Number Title Priority Date Filing Date
FR630110D Expired FR630110A (en) 1926-03-26 1927-03-03 Improvements to telephone systems

Country Status (3)

Country Link
US (1) US1805778A (en)
FR (1) FR630110A (en)
GB (1) GB273015A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB580010A (en) * 1944-02-16 1946-08-23 Automatic Telephone & Elect Improvements in or relating to telephone systems and automatic switches for use therein
US2691066A (en) * 1953-09-17 1954-10-05 Stromberg Carlson Co Automatic telephone system
US3009020A (en) * 1955-03-14 1961-11-14 William J Camp Digit absorbing converter for telephone switchboards

Also Published As

Publication number Publication date
GB273015A (en) 1927-06-27
US1805778A (en) 1931-05-19

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