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发明名称
Perfectionnements apportés aux moules intérieurs pour fabriquer des pièces tubulaires coudées en un matériau constitué par du ciment et des fibres
摘要
申请公布号
FR1142307(A)
申请公布日期
1957.09.17
申请号
FRD1142307
申请日期
1956.03.05
申请人
CAOLITA
发明人
分类号
B28B21/20
主分类号
B28B21/20
代理机构
代理人
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