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发明名称
Pointing device for stone carvers
摘要
申请公布号
US1920839(A)
申请公布日期
1933.08.01
申请号
US19290360552
申请日期
1929.05.04
申请人
CHARLES CATTANEO
发明人
CATTANEO CHARLES
分类号
B25H7/00
主分类号
B25H7/00
代理机构
代理人
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