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发明名称
LANDING WALKWAY GRATE
摘要
申请公布号
PL294934(A2)
申请公布日期
1993.03.22
申请号
PL19920294934
申请日期
1992.06.17
申请人
CRW ROST
发明人
DERKACZEW ALEKSANDER
分类号
E01C1/00;(IPC1-7):E01C1/00
主分类号
E01C1/00
代理机构
代理人
主权项
地址
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