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经营范围
发明名称
Telephone hand set
摘要
申请公布号
US1779490(A)
申请公布日期
1930.10.28
申请号
US19280325614
申请日期
1928.12.12
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
POCOCK LYNDALL CROSSTHWAITE
分类号
H04M1/03;H04R21/02
主分类号
H04M1/03
代理机构
代理人
主权项
地址
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