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发明名称
Method for preheating lens making materials
摘要
申请公布号
US2304663(A)
申请公布日期
1942.12.08
申请号
US19400355490
申请日期
1940.09.05
申请人
THE UNIVIS LENS COMPANY
发明人
SMITH CHARLES V.;WILLIAMS FRANK P.
分类号
B29C43/00;B29D11/00
主分类号
B29C43/00
代理机构
代理人
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