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发明名称
Paper making
摘要
申请公布号
US1944886(A)
申请公布日期
1934.01.30
申请号
US19330664811
申请日期
1933.04.06
申请人
GOESSMANN ANNA M D
发明人
GOESSMANN ANNA M. D.
分类号
D21H17/22
主分类号
D21H17/22
代理机构
代理人
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