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经营范围
发明名称
Automatically expandible polishing and buffing wheel
摘要
申请公布号
US2239140(A)
申请公布日期
1941.04.22
申请号
US19400312044
申请日期
1940.01.02
申请人
FRANK L. SZAFRANSKI;CHARLES E. WISNER
发明人
BARTON HIRAM J.;BARTON ROBERT H.
分类号
B24D9/02
主分类号
B24D9/02
代理机构
代理人
主权项
地址
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