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发明名称
PAPER TREATING METHOD
摘要
申请公布号
CA390371(A)
申请公布日期
1940.07.30
申请号
CAD390371
申请日期
申请人
PERVEL CORPORATION
发明人
FRANCIS DEWITT
分类号
主分类号
代理机构
代理人
主权项
地址
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