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发明名称
FINE SCREEN AND METHOD OF MAKING SAME
摘要
申请公布号
CA832850(A)
申请公布日期
1970.01.27
申请号
CAD832850
申请日期
申请人
ERIE DEVELOPMENT CO.
发明人
CHARLES J. WILLIAMS
分类号
主分类号
代理机构
代理人
主权项
地址
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