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发明名称
Memorial tablet
摘要
申请公布号
US1844048(A)
申请公布日期
1932.02.09
申请号
US19310532941
申请日期
1931.04.25
申请人
SPREER FRED W
发明人
SPREER FRED W.
分类号
E04H13/00
主分类号
E04H13/00
代理机构
代理人
主权项
地址
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