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发明名称
Means for mounting lenses
摘要
申请公布号
US1970357(A)
申请公布日期
1934.08.14
申请号
US19310566734
申请日期
1931.10.03
申请人
BELGARD-SPERO, INC.
发明人
BRAUCHT FREDERICK A.;BELGARD AUSTIN B.
分类号
G02C1/02
主分类号
G02C1/02
代理机构
代理人
主权项
地址
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