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发明名称
PENCIL FINISHING METHOD
摘要
申请公布号
CA339364(A)
申请公布日期
1934.02.13
申请号
CAD339364
申请日期
申请人
THE DIXON PENCIL COMPANY LIMITED;THE JOSEPH DIXON CRUCIBLE COMPANY
发明人
WILLIAM DANEKE
分类号
主分类号
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