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经营范围
发明名称
Lensless spectacles
摘要
申请公布号
US1959915(A)
申请公布日期
1934.05.22
申请号
US19320634356
申请日期
1932.09.22
申请人
GUTHRIE CHARLES C
发明人
GUTHRIE CHARLES C.
分类号
G02C7/16
主分类号
G02C7/16
代理机构
代理人
主权项
地址
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