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发明名称
METHOD OF FORMING BIFOCAL LENS BLANKS
摘要
申请公布号
CA681165(A)
申请公布日期
1964.03.03
申请号
CAD681165
申请日期
申请人
PITTSBURGH PLATE GLASS COMPANY
发明人
WILLIAM W. POUNDSTONE
分类号
主分类号
代理机构
代理人
主权项
地址
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