FR472430A - Semi-automatic telephone system - Google Patents

Semi-automatic telephone system

Info

Publication number
FR472430A
FR472430A FR472430DA FR472430A FR 472430 A FR472430 A FR 472430A FR 472430D A FR472430D A FR 472430DA FR 472430 A FR472430 A FR 472430A
Authority
FR
France
Prior art keywords
semi
telephone system
automatic telephone
automatic
telephone
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 FR472430A publication Critical patent/FR472430A/en
Expired legal-status Critical Current

Links

FR472430D 1913-09-18 1913-09-18 Semi-automatic telephone system Expired FR472430A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR472430T 1913-09-18

Publications (1)

Publication Number Publication Date
FR472430A true FR472430A (en) 1914-12-04

Family

ID=43351420

Family Applications (1)

Application Number Title Priority Date Filing Date
FR472430D Expired FR472430A (en) 1913-09-18 1913-09-18 Semi-automatic telephone system

Country Status (1)

Country Link
FR (1) FR472430A (en)

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