FR971539A - Telephone and analog switching systems - Google Patents

Telephone and analog switching systems

Info

Publication number
FR971539A
FR971539A FR971539DA FR971539A FR 971539 A FR971539 A FR 971539A FR 971539D A FR971539D A FR 971539DA FR 971539 A FR971539 A FR 971539A
Authority
FR
France
Prior art keywords
telephone
switching systems
analog switching
analog
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)
Inventor
Lee John Denney
Howard G Duhamel
Ralph William Engsberg
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR971539A publication Critical patent/FR971539A/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)
FR971539D 1947-09-17 1948-09-10 Telephone and analog switching systems Expired FR971539A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US289855XA 1947-09-17 1947-09-17

Publications (1)

Publication Number Publication Date
FR971539A true FR971539A (en) 1951-01-18

Family

ID=21846598

Family Applications (1)

Application Number Title Priority Date Filing Date
FR971539D Expired FR971539A (en) 1947-09-17 1948-09-10 Telephone and analog switching systems

Country Status (2)

Country Link
CH (1) CH289855A (en)
FR (1) FR971539A (en)

Also Published As

Publication number Publication date
CH289855A (en) 1953-03-31

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