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发明名称
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摘要
申请公布号
US1752472(A)
申请公布日期
1930.04.01
申请号
US19280260153
申请日期
1928.03.08
申请人
WHITMANIS MANUFACTURING COMPANY
发明人
WHITNEY KARL H.
分类号
A47H1/022
主分类号
A47H1/022
代理机构
代理人
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