DK43461C - Device for Telephone Devices with Speaker and Highly Sensitive Microphone. - Google Patents

Device for Telephone Devices with Speaker and Highly Sensitive Microphone.

Info

Publication number
DK43461C
DK43461C DK43461DA DK43461C DK 43461 C DK43461 C DK 43461C DK 43461D A DK43461D A DK 43461DA DK 43461 C DK43461 C DK 43461C
Authority
DK
Denmark
Prior art keywords
speaker
highly sensitive
telephone devices
sensitive microphone
microphone
Prior art date
Application number
Other languages
Danish (da)
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of DK43461C publication Critical patent/DK43461C/en

Links

DK43461D 1928-10-12 1929-09-28 Device for Telephone Devices with Speaker and Highly Sensitive Microphone. DK43461C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE43461X 1928-10-12

Publications (1)

Publication Number Publication Date
DK43461C true DK43461C (en) 1930-12-08

Family

ID=20263984

Family Applications (1)

Application Number Title Priority Date Filing Date
DK43461D DK43461C (en) 1928-10-12 1929-09-28 Device for Telephone Devices with Speaker and Highly Sensitive Microphone.

Country Status (1)

Country Link
DK (1) DK43461C (en)

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