Shrill alarm device with a mechanical sound generator functioning by scanning a sound track, engraved in metal, by means of a metal diaphragm (membrane).
申请公布号
DE4325083(A1)
申请公布日期
1995.02.23
申请号
DE19934325083
申请日期
1993.07.20
申请人
LOESCHER, HELMUT, 13627 BERLIN, DE;NAWRATH, PETER, 42853 REMSCHEID, DE
发明人
LOESCHER, HELMUT, 13627 BERLIN, DE;NAWRATH, PETER, 42853 REMSCHEID, DE
