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发明名称
Telephonic equipment monitoring system
摘要
申请公布号
US3205308(A)
申请公布日期
1965.09.07
申请号
US19600051330
申请日期
1960.08.23
申请人
UNION CARBIDE CORPORATION
发明人
CALVERT WILLIAM L.
分类号
H04M11/04
主分类号
H04M11/04
代理机构
代理人
主权项
地址
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