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发明名称
Installation téléphonique pour mines grisouteuses
摘要
申请公布号
FR784729(A)
申请公布日期
1935.07.23
申请号
FRD784729
申请日期
1934.02.01
申请人
COMPAGNIE DES FORGES ET ACIERIES DE LA MARINE ET D'HOMECOURT
发明人
GRANAT;SAVARY RAOUL
分类号
H04M9/00
主分类号
H04M9/00
代理机构
代理人
主权项
地址
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