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发明名称
Intercommunication system
摘要
申请公布号
US3243512(A)
申请公布日期
1966.03.29
申请号
US19650446756
申请日期
1965.03.01
申请人
TALK-A-PHONE CO.
发明人
LIBERMAN ARIE
分类号
H04M9/00
主分类号
H04M9/00
代理机构
代理人
主权项
地址
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