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发明名称
HIGHLY-SELECTIVE FREQUENCY DETECTION SYSTEM
摘要
申请公布号
CA942852(A)
申请公布日期
1974.02.26
申请号
CA19700091058
申请日期
1970.08.18
申请人
TEL-TONE CORPORATION
发明人
MCINTOSH, ALEXANDER C.;SMITH, MAURICE I.
分类号
H04M9/00;H04Q1/457
主分类号
H04M9/00
代理机构
代理人
主权项
地址
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