DK45453C - Coupling device for Telephone system with Selector operation and Voice current amplifiers. - Google Patents

Coupling device for Telephone system with Selector operation and Voice current amplifiers.

Info

Publication number
DK45453C
DK45453C DK45453DA DK45453C DK 45453 C DK45453 C DK 45453C DK 45453D A DK45453D A DK 45453DA DK 45453 C DK45453 C DK 45453C
Authority
DK
Denmark
Prior art keywords
coupling device
telephone system
current amplifiers
voice current
selector operation
Prior art date
Application number
Other languages
Danish (da)
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 DK45453C publication Critical patent/DK45453C/en

Links

DK45453D 1927-12-16 1928-12-06 Coupling device for Telephone system with Selector operation and Voice current amplifiers. DK45453C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE45453T 1927-12-16

Publications (1)

Publication Number Publication Date
DK45453C true DK45453C (en) 1932-03-29

Family

ID=28796830

Family Applications (1)

Application Number Title Priority Date Filing Date
DK45453D DK45453C (en) 1927-12-16 1928-12-06 Coupling device for Telephone system with Selector operation and Voice current amplifiers.

Country Status (1)

Country Link
DK (1) DK45453C (en)

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