AT136580B - Talk time counter for telephone desk stations. - Google Patents

Talk time counter for telephone desk stations.

Info

Publication number
AT136580B
AT136580B AT136580DA AT136580B AT 136580 B AT136580 B AT 136580B AT 136580D A AT136580D A AT 136580DA AT 136580 B AT136580 B AT 136580B
Authority
AT
Austria
Prior art keywords
time counter
talk time
telephone desk
stations
desk stations
Prior art date
Application number
Other languages
German (de)
Inventor
Walter Wodak
Friedrich Ing Siehs
Franz Gerhard Dr Ing Back
Original Assignee
Walter Wodak
Friedrich Ing Siehs
Franz Gerhard Dr Ing Back
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 Walter Wodak, Friedrich Ing Siehs, Franz Gerhard Dr Ing Back filed Critical Walter Wodak
Application granted granted Critical
Publication of AT136580B publication Critical patent/AT136580B/en

Links

AT136580D 1931-12-30 1931-12-30 Talk time counter for telephone desk stations. AT136580B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT136580T 1931-12-30

Publications (1)

Publication Number Publication Date
AT136580B true AT136580B (en) 1934-02-26

Family

ID=3639300

Family Applications (1)

Application Number Title Priority Date Filing Date
AT136580D AT136580B (en) 1931-12-30 1931-12-30 Talk time counter for telephone desk stations.

Country Status (1)

Country Link
AT (1) AT136580B (en)

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