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发明名称
Process for welding seams in the manufacture of lift-type gas holders
摘要
申请公布号
US2621399(A)
申请公布日期
1952.12.16
申请号
US19470739240
申请日期
1947.04.03
申请人
KOPPERS COMPANY, INC.
发明人
THOMPSON ARTHUR C.
分类号
F17B1/00
主分类号
F17B1/00
代理机构
代理人
主权项
地址
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