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发明名称
Apparatus for burnishing silver plate
摘要
申请公布号
US1812909(A)
申请公布日期
1931.07.07
申请号
US19280290677
申请日期
1928.07.05
申请人
LOUIS TRINQUET;MARCEL HAMEL RENE
发明人
TRINQUET LOUIS;HAMEL RENE MARCEL
分类号
B24B19/00
主分类号
B24B19/00
代理机构
代理人
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