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发明名称
Edentulous and partially edentulous edmonstrational and educational model
摘要
申请公布号
US2657462(A)
申请公布日期
1953.11.03
申请号
US19520296394
申请日期
1952.06.30
申请人
WILLIAM ARROW
发明人
ARROW WILLIAM
分类号
G09B23/28
主分类号
G09B23/28
代理机构
代理人
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