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经营范围
发明名称
DOORPHONE SET WITH AUTOMATIC ANSWERING FUNCTION
摘要
申请公布号
JPH02149172(A)
申请公布日期
1990.06.07
申请号
JP19880303791
申请日期
1988.11.30
申请人
NEC CORP
发明人
SASAKI HIROMASA
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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