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发明名称
SPIRIT DUPLICATING CARBON SHEETS
摘要
申请公布号
CA552652(A)
申请公布日期
1958.02.04
申请号
CAD552652
申请日期
申请人
ELLAMS DUPLICATOR COMPANY LIMITED
发明人
NORMAN A. ARMITAGE;HENRY ECCLES
分类号
主分类号
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