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发明名称
EDUCATION APPLIANCE FOR DEMONSTRATION OF ROTATIONAL MOTION LAWS
摘要
申请公布号
SU771705(A1)
申请公布日期
1980.10.15
申请号
SU19721795339
申请日期
1972.06.12
申请人
BONFELD SEMEN M,SU
发明人
BONFELD SEMEN M,SU
分类号
G09B23/08;(IPC1-7):G09B23/08
主分类号
G09B23/08
代理机构
代理人
主权项
地址
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