DK45748C - 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: DK45748C
Authority: DK; Denmark
Prior art keywords: coupling device; telephone system; current amplifiers; voice current; selector operation
Prior art date: 1927-12-15

Application number

Other languages

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.)

1927-12-15

Filing date

1928-12-06

Publication date

1932-05-30

1928-12-06 Application filed by Siemens Ag filed Critical Siemens Ag

1932-05-30 Application granted granted Critical

1932-05-30 Publication of DK45748C publication Critical patent/DK45748C/en

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE45748X		1927-12-15

Publications (1)

Publication Number	Publication Date
DK45748C true DK45748C (en)	1932-05-30

Family

ID=5625082

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK45748D DK45748C (en)	1927-12-15	1928-12-06	Coupling device for Telephone system with Selector operation and Voice current amplifiers.

Country Status (1)

Country	Link
DK (1)	DK45748C (en)

1928
- 1928-12-06 DK DK45748D patent/DK45748C/en active

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