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经营范围
发明名称
Roller vibrator
摘要
申请公布号
US2248478(A)
申请公布日期
1941.07.08
申请号
US19380218241
申请日期
1938.07.08
申请人
WILLIAM MALL ARTHUR
发明人
MALL ARTHUR WILLIAM
分类号
E01C19/28
主分类号
E01C19/28
代理机构
代理人
主权项
地址
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