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经营范围
发明名称
Signalling Apparatus
摘要
申请公布号
GB1159787(A)
申请公布日期
1969.07.30
申请号
GB19660054790
申请日期
1966.12.07
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
分类号
G10L19/00;H04L27/26;H04M11/10
主分类号
G10L19/00
代理机构
代理人
主权项
地址
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