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经营范围
发明名称
Procédé de réalisation d'une installation à membrane émettrice de sons et comportant un émetteur polarisé
摘要
申请公布号
FR757835(A)
申请公布日期
1934.01.05
申请号
FRD757835
申请日期
1933.07.01
申请人
NAAMLOOZE VENNOOTSCHAP MACHINERIEEN-EN APPARATEN FABRIEKEN
发明人
分类号
G01S1/72
主分类号
G01S1/72
代理机构
代理人
主权项
地址
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