CH70979A - Device to stop the ringing of telephone exchanges - Google Patents

Device to stop the ringing of telephone exchanges

Info

Publication number
CH70979A
CH70979A CH70979A CH70979DA CH70979A CH 70979 A CH70979 A CH 70979A CH 70979 A CH70979 A CH 70979A CH 70979D A CH70979D A CH 70979DA CH 70979 A CH70979 A CH 70979A
Authority
CH
Switzerland
Prior art keywords
ringing
stop
telephone exchanges
exchanges
telephone
Prior art date
Application number
CH70979A
Other languages
French (fr)
Inventor
Co Bell Telephon Manufacturing
Original Assignee
Bell Telephone Mfg
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 Bell Telephone Mfg filed Critical Bell Telephone Mfg
Publication of CH70979A publication Critical patent/CH70979A/en

Links

CH70979A 1914-12-05 1914-12-05 Device to stop the ringing of telephone exchanges CH70979A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH70979T 1914-12-05

Publications (1)

Publication Number Publication Date
CH70979A true CH70979A (en) 1915-11-16

Family

ID=4319889

Family Applications (1)

Application Number Title Priority Date Filing Date
CH70979A CH70979A (en) 1914-12-05 1914-12-05 Device to stop the ringing of telephone exchanges

Country Status (1)

Country Link
CH (1) CH70979A (en)

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