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发明名称
Doppelrohr.
摘要
申请公布号
CH280609(A)
申请公布日期
1952.01.31
申请号
CHD280609
申请日期
1950.03.21
申请人
OONK,JAN WILLEM
发明人
WILLEM OONK,JAN
分类号
B29C63/26;B32B15/08;F16L58/10
主分类号
B29C63/26
代理机构
代理人
主权项
地址
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