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发明名称
FILTER UNIT
摘要
申请公布号
CA487815(A)
申请公布日期
1952.11.04
申请号
CAD487815
申请日期
申请人
PAPER PATENTS COMPANY
发明人
JOHN E. VALENTE
分类号
主分类号
代理机构
代理人
主权项
地址
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