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发明名称
Improvements in or relating to Environment Identification Systems
摘要
申请公布号
GB1183982(A)
申请公布日期
1970.03.11
申请号
GB19670023729
申请日期
1967.05.22
申请人
NATIONAL RESEARCH DVELOPMENT CORPORATION
发明人
DAVID BLYTHE FOSTER
分类号
G09B21/00
主分类号
G09B21/00
代理机构
代理人
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