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发明名称
LENS BLANK PREFORMING METHOD
摘要
申请公布号
CA407590(A)
申请公布日期
1942.09.22
申请号
CAD407590
申请日期
申请人
THE UNIVIS LENS COMPANY
发明人
FRANK PRESTON WILLIAMS
分类号
主分类号
代理机构
代理人
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地址
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