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发明名称
Booth floor
摘要
申请公布号
US1854222(A)
申请公布日期
1932.04.19
申请号
US19300469070
申请日期
1930.07.19
申请人
GERARD T. POTTHOFF
发明人
POTTHOFF KURT T.
分类号
E04H1/14
主分类号
E04H1/14
代理机构
代理人
主权项
地址
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