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发明名称
UNLEADED CERAMIC COMPOSITIONS
摘要
申请公布号
GB9213959(D0)
申请公布日期
1992.08.12
申请号
GB19920013959
申请日期
1992.07.01
申请人
EVANS, PHILIP A;WIRTZ, ROLF A;HARRISON, PAUL
发明人
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主分类号
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