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发明名称
CALLING BOX
摘要
申请公布号
CA835501(A)
申请公布日期
1970.02.24
申请号
CAD835501
申请日期
申请人
E. W. BLISS COMPANY
发明人
FOSTER E. WELD;ROBERT W. LASSELL;ROBERT B. MCLEOD
分类号
主分类号
代理机构
代理人
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