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经营范围
发明名称
Balanced cover support
摘要
申请公布号
US1767731(A)
申请公布日期
1930.06.24
申请号
US19270185940
申请日期
1927.04.23
申请人
ALFRED BERSTED;MARTIN BERSTED
发明人
BERSTED ALFRED;BERSTED MARTIN
分类号
E05F1/10
主分类号
E05F1/10
代理机构
代理人
主权项
地址
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