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经营范围
发明名称
Improvements in or relating to communication systems
摘要
申请公布号
GB1118512(A)
申请公布日期
1968.07.03
申请号
GB19670013094
申请日期
1967.03.21
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
SCHOEFFLER MAX S.
分类号
H04M3/44
主分类号
H04M3/44
代理机构
代理人
主权项
地址
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