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摘要
申请公布号
DE1095540(B)
申请公布日期
1960.12.22
申请号
DE1957F023163
申请日期
1957.06.04
申请人
FARRAND OPTICAL CO. INC.
发明人
TRONNIER ALBRECHT WILHELM
分类号
G02B13/00
主分类号
G02B13/00
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