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发明名称
Grinder
摘要
申请公布号
US2055709(A)
申请公布日期
1936.09.29
申请号
US19320616228
申请日期
1932.06.09
申请人
AMERICAN BRAKEBLOK CORPORATION
发明人
SMITH HARRY N.
分类号
B24B7/13
主分类号
B24B7/13
代理机构
代理人
主权项
地址
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