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摘要
申请公布号
US1757162(A)
申请公布日期
1930.05.06
申请号
US19270238181
申请日期
1927.12.06
申请人
BEEMAN LEON J
发明人
BEEMAN LEON J.
分类号
A47G29/122
主分类号
A47G29/122
代理机构
代理人
主权项
地址
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