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发明名称
摘要
申请公布号
PL93803(B1)
申请公布日期
1977.06.30
申请号
PL19740175605
申请日期
1974.11.14
申请人
发明人
分类号
B66F9/08;B66F9/22;(IPC1-7):B66F9/22
主分类号
B66F9/08
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