AT89309B - Telephone switching system. - Google Patents

Telephone switching system.

Info

Publication number
AT89309B
AT89309B AT89309DA AT89309B AT 89309 B AT89309 B AT 89309B AT 89309D A AT89309D A AT 89309DA AT 89309 B AT89309 B AT 89309B
Authority
AT
Austria
Prior art keywords
switching system
telephone switching
telephone
switching
Prior art date
Application number
Other languages
German (de)
Original Assignee
Western Electric Co Ltd
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 Western Electric Co Ltd filed Critical Western Electric Co Ltd
Application granted granted Critical
Publication of AT89309B publication Critical patent/AT89309B/en

Links

AT89309D 1917-09-14 1920-07-05 Telephone switching system. AT89309B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US89309XA 1917-09-14 1917-09-14

Publications (1)

Publication Number Publication Date
AT89309B true AT89309B (en) 1922-09-11

Family

ID=21734548

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89309D AT89309B (en) 1917-09-14 1920-07-05 Telephone switching system.

Country Status (1)

Country Link
AT (1) AT89309B (en)

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