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发明名称
Optical toy
摘要
申请公布号
US3099933(A)
申请公布日期
1963.08.06
申请号
US19600027953
申请日期
1960.05.09
申请人
MARVIN I. GLASS
发明人
WEINER HILMAN
分类号
A63H33/22;G02B27/06
主分类号
A63H33/22
代理机构
代理人
主权项
地址
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