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发明名称
Adjustable head band
摘要
申请公布号
US2111746(A)
申请公布日期
1938.03.22
申请号
US19370166795
申请日期
1937.10.01
申请人
BOWERS FREDERICK M
发明人
BOWERS FREDERICK M.
分类号
A42B3/14
主分类号
A42B3/14
代理机构
代理人
主权项
地址
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