CH31512A - Telephone device for the clear transmission of tones over long distances - Google Patents

Telephone device for the clear transmission of tones over long distances

Info

Publication number
CH31512A
CH31512A CH31512A CH31512DA CH31512A CH 31512 A CH31512 A CH 31512A CH 31512 A CH31512 A CH 31512A CH 31512D A CH31512D A CH 31512DA CH 31512 A CH31512 A CH 31512A
Authority
CH
Switzerland
Prior art keywords
telephone device
over long
long distances
tones over
clear transmission
Prior art date
Application number
CH31512A
Other languages
German (de)
Inventor
Victorien Dr Med Tardieu
Original Assignee
Victorien Dr Med Tardieu
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 Victorien Dr Med Tardieu filed Critical Victorien Dr Med Tardieu
Publication of CH31512A publication Critical patent/CH31512A/en

Links

CH31512A 1904-05-06 1904-05-06 Telephone device for the clear transmission of tones over long distances CH31512A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH31512T 1904-05-06

Publications (1)

Publication Number Publication Date
CH31512A true CH31512A (en) 1905-04-15

Family

ID=4249703

Family Applications (1)

Application Number Title Priority Date Filing Date
CH31512A CH31512A (en) 1904-05-06 1904-05-06 Telephone device for the clear transmission of tones over long distances

Country Status (1)

Country Link
CH (1) CH31512A (en)

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