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发明名称
Method of making flexible corrugated tubular metal walls
摘要
申请公布号
US1970650(A)
申请公布日期
1934.08.21
申请号
US19300440582
申请日期
1930.03.31
申请人
THE FULTON SYLPHON COMPANY
发明人
FULTON WESTON M.
分类号
B21C37/20
主分类号
B21C37/20
代理机构
代理人
主权项
地址
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