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发明名称
Method and means for preventing tears in thermoplastic material
摘要
申请公布号
US2442757(A)
申请公布日期
1948.06.08
申请号
US19440532562
申请日期
1944.04.24
申请人
CLOUD WILLIAM S
发明人
CLOUD WILLIAM S.
分类号
B29C55/02;B29C55/08
主分类号
B29C55/02
代理机构
代理人
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