DK31751C - Lydtransmissionsapparat til Telefoner. - Google Patents

Lydtransmissionsapparat til Telefoner.

Info

Publication number
DK31751C
DK31751C DK31751DA DK31751C DK 31751 C DK31751 C DK 31751C DK 31751D A DK31751D A DK 31751DA DK 31751 C DK31751 C DK 31751C
Authority
DK
Denmark
Prior art keywords
phones
transmission device
audio transmission
audio
transmission
Prior art date
Application number
Other languages
English (en)
Inventor
Martin Georg Andersen
Original Assignee
Martin Georg Andersen
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 Martin Georg Andersen filed Critical Martin Georg Andersen
Application granted granted Critical
Publication of DK31751C publication Critical patent/DK31751C/da

Links

DK31751D 1922-08-08 1922-08-08 Lydtransmissionsapparat til Telefoner. DK31751C (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK31751T 1922-08-08

Publications (1)

Publication Number Publication Date
DK31751C true DK31751C (da) 1923-05-22

Family

ID=8119935

Family Applications (1)

Application Number Title Priority Date Filing Date
DK31751D DK31751C (da) 1922-08-08 1922-08-08 Lydtransmissionsapparat til Telefoner.

Country Status (1)

Country Link
DK (1) DK31751C (da)

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