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摘要
申请公布号
US1939023(A)
申请公布日期
1933.12.12
申请号
US19330665577
申请日期
1933.04.11
申请人
WILLIAM PRITCHARD EVAN
发明人
PRITCHARD EVAN WILLIAM
分类号
A45C11/32
主分类号
A45C11/32
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