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发明名称
Star and sky simulator
摘要
申请公布号
US3395607(A)
申请公布日期
1968.08.06
申请号
US19640353737
申请日期
1964.03.23
申请人
KEUFFEL & ESSER COMPANY
发明人
GEIER GEORGE
分类号
G09B27/04
主分类号
G09B27/04
代理机构
代理人
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