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发明名称
Process for the production of a writing chalk having improved writing action
摘要
A chalk for writing is described which has an improved writing action by virtue of the incorporation into the chalk of titanium dioxide (TiO2).
申请公布号
DE3819034(A1)
申请公布日期
1989.12.14
申请号
DE19883819034
申请日期
1988.06.03
申请人
ECKERT, THEODOR, PROF. DR.;BOECKMANN, JUERGEN, 4400 MUENSTER, DE
发明人
ECKERT, THEODOR, PROF. DR.;BOECKMANN, JUERGEN, 4400 MUENSTER, DE
分类号
B43K19/00;C09D13/00
主分类号
B43K19/00
代理机构
代理人
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