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发明名称
Door
摘要
申请公布号
US1895151(A)
申请公布日期
1933.01.24
申请号
US19290355057
申请日期
1929.04.15
申请人
THE YOUNGSTOWN STEEL DOOR COMPANY
发明人
DITCHFIELD FRANK
分类号
B61D19/00
主分类号
B61D19/00
代理机构
代理人
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