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发明名称
摘要
申请公布号
DE1966673(C3)
申请公布日期
1980.11.06
申请号
DE19691966673
申请日期
1969.02.26
申请人
NIPPON CONCRETE INDUSTRIES CO., LTD., TOKIO
发明人
FUKUSHIMA, YOSHIKIYO;ISHIHARA YASUSHI;MOMOTA, KENZO;USUI, YASUO, CHIGASAKI, KANAGAWA;SAKUMURA, TUYOSHI;SOGO, SATORU;NUNOKAWA, JOJI
分类号
B21F27/12;E04C5/06;(IPC1-7):B21F31/00
主分类号
B21F27/12
代理机构
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