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发明名称
Safety stair pad retainer
摘要
申请公布号
US1974340(A)
申请公布日期
1934.09.18
申请号
US19320584685
申请日期
1932.01.04
申请人
MELTZ DAVID E
发明人
MELTZ DAVID E.
分类号
A47G27/06
主分类号
A47G27/06
代理机构
代理人
主权项
地址
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