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发明名称
Milling pitch at low temp
摘要
<p>Milling of pitch for making carbon brushes is performed with use of liquid N2. Preferably, CO2 may be used. A low-temp. mill is combined with a mixer, and can be used for other materials for which the process is suitable.</p>
申请公布号
DE1960682(A1)
申请公布日期
1971.06.09
申请号
DE19691960682
申请日期
1969.12.03
申请人
GERHARD,ALFRED
发明人
GERHARD,ALFRED
分类号
B01F15/06;B02C19/18
主分类号
B01F15/06
代理机构
代理人
主权项
地址
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