CH55448A - Call counting device for telephone systems - Google Patents

Call counting device for telephone systems

Info

Publication number
CH55448A
CH55448A CH55448A CH55448DA CH55448A CH 55448 A CH55448 A CH 55448A CH 55448 A CH55448 A CH 55448A CH 55448D A CH55448D A CH 55448DA CH 55448 A CH55448 A CH 55448A
Authority
CH
Switzerland
Prior art keywords
counting device
telephone systems
call counting
call
telephone
Prior art date
Application number
CH55448A
Other languages
German (de)
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 CH55448A publication Critical patent/CH55448A/en

Links

CH55448A 1910-12-12 1910-12-12 Call counting device for telephone systems CH55448A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH55448T 1910-12-12

Publications (1)

Publication Number Publication Date
CH55448A true CH55448A (en) 1912-08-16

Family

ID=4295368

Family Applications (1)

Application Number Title Priority Date Filing Date
CH55448A CH55448A (en) 1910-12-12 1910-12-12 Call counting device for telephone systems

Country Status (1)

Country Link
CH (1) CH55448A (en)

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