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发明名称
Method for the manufacture of sandwich panels
摘要
申请公布号
US3404054(A)
申请公布日期
1968.10.01
申请号
US19650446004
申请日期
1965.04.06
申请人
ROBERT R. WINGERT
发明人
WINGERT ROBERT R.
分类号
B21D47/00
主分类号
B21D47/00
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