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发明名称
Hat
摘要
申请公布号
US2020191(A)
申请公布日期
1935.11.05
申请号
US19340746587
申请日期
1934.10.02
申请人
WILLIAM KATZ
发明人
KATZ WILLIAM
分类号
A42B1/02
主分类号
A42B1/02
代理机构
代理人
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地址
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