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经营范围
发明名称
Saliva ejector and reflector
摘要
申请公布号
US2436040(A)
申请公布日期
1948.02.17
申请号
US19470729953
申请日期
1947.02.21
申请人
HENRY FRIEDMAN
发明人
FRIEDMAN HENRY
分类号
A61C17/08
主分类号
A61C17/08
代理机构
代理人
主权项
地址
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