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发明名称
Dental stress breaker
摘要
申请公布号
US1746037(A)
申请公布日期
1930.02.04
申请号
US19270224376
申请日期
1927.10.06
申请人
GROVE CARL J
发明人
GROVE CARL J.
分类号
A61C13/267;A61C13/32
主分类号
A61C13/267
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代理人
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