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Means for marking lenses and similar articles
摘要
申请公布号
US2307501(A)
申请公布日期
1943.01.05
申请号
US19410397750
申请日期
1941.06.12
申请人
AMERICAN OPTICAL COMPANY
发明人
GODDU LLOYD W.;CRAWFORD IAN C.
分类号
B24B13/005
主分类号
B24B13/005
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