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发明名称
EDUCATIONAL OBSERVATORY
摘要
申请公布号
US3626902(A)
申请公布日期
1971.12.14
申请号
USD3626902
申请日期
1969.12.08
申请人
AMERICAN SCIENCE AND ENGINEERING INC.
发明人
JOHN B. ORFEI
分类号
A01K1/035;A01K67/033;(IPC1-7):A01K1/00
主分类号
A01K1/035
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