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发明名称
Tooth
摘要
申请公布号
US1837042(A)
申请公布日期
1931.12.15
申请号
US19280294632
申请日期
1928.07.23
申请人
HALL RUPERT E
发明人
HALL RUPERT E.
分类号
A61C13/097
主分类号
A61C13/097
代理机构
代理人
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