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经营范围
发明名称
MINIATURE TELEPHONE RINGER
摘要
申请公布号
CA838961(A)
申请公布日期
1970.04.14
申请号
CAD838961
申请日期
申请人
AUTOMATIC ELECTRIC LABORATORIES
发明人
GEORGE L. BROWN
分类号
主分类号
代理机构
代理人
主权项
地址
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