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发明名称
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摘要
申请公布号
US2236739(A)
申请公布日期
1941.04.01
申请号
US19400364288
申请日期
1940.11.04
申请人
ROLAND WALTMAN IRVING
发明人
WALTMAN IRVING ROLAND
分类号
A43D1/02
主分类号
A43D1/02
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