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发明名称
PRECAST PRESTRESSED CONCRETE CHANNEL BEAMS
摘要
申请公布号
PL286341(A1)
申请公布日期
1992.02.10
申请号
PL19900286341
申请日期
1990.08.03
申请人
INKOM PRZED INNOWACYJNO PROD Z
发明人
JENDRZEJEK STEFAN;SIEGEL GRZEGORZ;GAZDA LECHOSLAW
分类号
E01D19/00;E04C3/20;(IPC1-7):E04C3/20
主分类号
E01D19/00
代理机构
代理人
主权项
地址
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