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发明名称
PROCESSO E APARELHO PARA A PRE-EXPANSAO DE GRAOS DE POLIMEROS
摘要
申请公布号
BR6912549(D0)
申请公布日期
1973.01.09
申请号
BR19690212549
申请日期
1969.09.19
申请人
SINCLAIR KOPPERS CO
发明人
IMMEL R
分类号
B29C;(IPC1-7):B29D27/00
主分类号
B29C
代理机构
代理人
主权项
地址
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