FR457007A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
FR457007A
FR457007A FR457007DA FR457007A FR 457007 A FR457007 A FR 457007A FR 457007D A FR457007D A FR 457007DA FR 457007 A FR457007 A FR 457007A
Authority
FR
France
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
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.)
Automatic Electric Co
Original Assignee
Automatic Electric 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 Automatic Electric Co filed Critical Automatic Electric Co
Application granted granted Critical
Publication of FR457007A publication Critical patent/FR457007A/en
Expired legal-status Critical Current

Links

FR457007D 1913-02-24 1913-02-24 Telephone exchange system Expired FR457007A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR457007T 1913-02-24

Publications (1)

Publication Number Publication Date
FR457007A true FR457007A (en) 1913-09-10

Family

ID=43351092

Family Applications (1)

Application Number Title Priority Date Filing Date
FR457007D Expired FR457007A (en) 1913-02-24 1913-02-24 Telephone exchange system

Country Status (1)

Country Link
FR (1) FR457007A (en)

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