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摘要
申请公布号
US2255100(A)
申请公布日期
1941.09.09
申请号
US19390262398
申请日期
1939.03.17
申请人
DAVID R. BRADY;J. WINDSOR DAVIS
发明人
BRADY DAVID R.
分类号
A43B21/32
主分类号
A43B21/32
代理机构
代理人
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地址
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