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发明名称
Means for making comparison tablets for optical examination of flour
摘要
申请公布号
US1995445(A)
申请公布日期
1935.03.26
申请号
US19330669223
申请日期
1933.05.03
申请人
PAUL BIERDEL
发明人
BIERDEL PAUL
分类号
G01N33/10
主分类号
G01N33/10
代理机构
代理人
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