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发明名称
Folding spectacles
摘要
申请公布号
US1970044(A)
申请公布日期
1934.08.14
申请号
US19310583860
申请日期
1931.12.30
申请人
MORRIS KLEIN
发明人
KLEIN MORRIS
分类号
G02C5/00
主分类号
G02C5/00
代理机构
代理人
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