CA866973A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA866973A
CA866973A CA866973A CA866973DA CA866973A CA 866973 A CA866973 A CA 866973A CA 866973 A CA866973 A CA 866973A CA 866973D A CA866973D A CA 866973DA CA 866973 A CA866973 A CA 866973A
Authority
CA
Canada
Prior art keywords
exchange system
telephone exchange
telephone
exchange
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
CA866973A
Inventor
Kondo Eiroku
Li Chikai
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Publication date
Application granted granted Critical
Publication of CA866973A publication Critical patent/CA866973A/en
Expired legal-status Critical Current

Links

CA866973A Telephone exchange system Expired CA866973A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA866973T

Publications (1)

Publication Number Publication Date
CA866973A true CA866973A (en) 1971-03-23

Family

ID=36352282

Family Applications (1)

Application Number Title Priority Date Filing Date
CA866973A Expired CA866973A (en) Telephone exchange system

Country Status (1)

Country Link
CA (1) CA866973A (en)

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