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经营范围
发明名称
Stone working tool
摘要
申请公布号
US2160568(A)
申请公布日期
1939.05.30
申请号
US19380238464
申请日期
1938.11.02
申请人
SWENSON GUSTAVE A
发明人
SWENSON GUSTAVE A.
分类号
B28D1/20
主分类号
B28D1/20
代理机构
代理人
主权项
地址
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