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发明名称
摘要
申请公布号
FR2009601(A1)
申请公布日期
1970.02.06
申请号
FR19690017571
申请日期
1969.05.29
申请人
TEXTRON INC
发明人
分类号
B21B31/32;B21B37/62;B21B37/64;(IPC1-7):B21B37/00
主分类号
B21B31/32
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代理人
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