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发明名称
Thoriumfreies optisches Glas
摘要
申请公布号
DE1771624(A1)
申请公布日期
1972.01.05
申请号
DE19681771624
申请日期
1968.06.19
申请人
PILKINGTON BROTHERS LTD.
发明人
分类号
B01D11/04;C03C3/068;C03C3/15;C03C3/23
主分类号
B01D11/04
代理机构
代理人
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地址
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