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发明名称
Improvements in or relating to kaleidoscopic apparatus
摘要
申请公布号
GB796102(A)
申请公布日期
1958.06.04
申请号
GB19550016727
申请日期
1955.06.10
申请人
RONALD MORRIS DAVIES
发明人
DAVIES WILLIAM
分类号
G02B27/08
主分类号
G02B27/08
代理机构
代理人
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