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发明名称
Process of making veneered tubing
摘要
申请公布号
US2221208(A)
申请公布日期
1940.11.12
申请号
US19380190404
申请日期
1938.02.14
申请人
SIMS ERNEST M
发明人
SIMS ERNEST M.
分类号
B21C37/15
主分类号
B21C37/15
代理机构
代理人
主权项
地址
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