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经营范围
发明名称
SECTIONAL HOLLOW METAL POLE STRUCTURE
摘要
申请公布号
CA2017983(A1)
申请公布日期
1991.11.30
申请号
CA19902017983
申请日期
1990.05.31
申请人
TRI-STEEL INDUSTRIES INC.
发明人
BOURDON, DONALD G.
分类号
E04H12/08
主分类号
E04H12/08
代理机构
代理人
主权项
地址
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