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发明名称
Machine for engraving rings
摘要
申请公布号
US2142742(A)
申请公布日期
1939.01.03
申请号
US19360080601
申请日期
1936.05.19
申请人
FELIX BLOIS
发明人
BLOIS FELIX
分类号
B44B5/00;B44B5/02
主分类号
B44B5/00
代理机构
代理人
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地址
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