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发明名称
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摘要
申请公布号
US2761590(A)
申请公布日期
1956.09.04
申请号
US19520292296
申请日期
1952.06.07
申请人
PLAX CORPORATION
发明人
BOIS JOHN H. DU
分类号
A47K5/122
主分类号
A47K5/122
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代理人
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