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发明名称
INDICATOR SYSTEM
摘要
申请公布号
CA509713(A)
申请公布日期
1955.02.01
申请号
CAD509713
申请日期
申请人
INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
发明人
GILBERT R. CLARK
分类号
主分类号
代理机构
代理人
主权项
地址
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