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AT131949B - Circuit arrangement for time counting connections of different values in telephone installations. - Google Patents

Circuit arrangement for time counting connections of different values in telephone installations.

Info

Publication number
AT131949B
AT131949B AT131949DA AT131949B AT 131949 B AT131949 B AT 131949B AT 131949D A AT131949D A AT 131949DA AT 131949 B AT131949 B AT 131949B
Authority
AT
Austria
Prior art keywords
circuit arrangement
different values
time counting
telephone installations
counting connections
Prior art date
Application number
Other languages
German (de)
Inventor
Friedrich Lill
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of AT131949B publication Critical patent/AT131949B/en

Links

AT131949D 1931-08-29 1931-08-29 Circuit arrangement for time counting connections of different values in telephone installations. AT131949B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT131949T 1931-08-29

Publications (1)

Publication Number Publication Date
AT131949B true AT131949B (en) 1933-02-25

Family

ID=3637189

Family Applications (1)

Application Number Title Priority Date Filing Date
AT131949D AT131949B (en) 1931-08-29 1931-08-29 Circuit arrangement for time counting connections of different values in telephone installations.

Country Status (1)

Country Link
AT (1) AT131949B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111986373A (en) * 2020-09-09 2020-11-24 重庆电子工程职业学院 Security system for training place

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111986373A (en) * 2020-09-09 2020-11-24 重庆电子工程职业学院 Security system for training place

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