DK470C - Kulpulvermikrofoner. - Google Patents

Kulpulvermikrofoner.

Info

Publication number
DK470C
DK470C DK470DA DK470C DK 470 C DK470 C DK 470C DK 470D A DK470D A DK 470DA DK 470 C DK470 C DK 470C
Authority
DK
Denmark
Prior art keywords
microphones
coal powder
coal
powder
powder microphones
Prior art date
Application number
Other languages
English (en)
Inventor
Lars Magnus Ericsson
Original Assignee
Lars Magnus Ericsson
Publication date
Application granted granted Critical
Publication of DK470C publication Critical patent/DK470C/da

Links

DK470D Kulpulvermikrofoner. DK470C (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK470T

Publications (1)

Publication Number Publication Date
DK470C true DK470C (da) 1896-04-07

Family

ID=27817056

Family Applications (1)

Application Number Title Priority Date Filing Date
DK470D DK470C (da) Kulpulvermikrofoner.

Country Status (1)

Country Link
DK (1) DK470C (da)

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