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经营范围
发明名称
ANNOYANCE CALL TRAP
摘要
申请公布号
US3431364(A)
申请公布日期
1969.03.04
申请号
USD3431364
申请日期
1965.07.09
申请人
INTERN. STANDARD ELECTRIC CORP.
发明人
HERBERT SIEGEL
分类号
H04Q3/42;(IPC1-7):H04M3/00
主分类号
H04Q3/42
代理机构
代理人
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地址
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