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发明名称
Metal cell
摘要
申请公布号
US1818522(A)
申请公布日期
1931.08.11
申请号
US19290391486
申请日期
1929.09.09
申请人
FRANKLIN YOUNGBLOOD DAVID
发明人
YOUNGBLOOD DAVID FRANKLIN
分类号
E04H1/12;E04H3/00;E04H3/08
主分类号
E04H1/12
代理机构
代理人
主权项
地址
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