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发明名称
Optical apparatus
摘要
申请公布号
US1797544(A)
申请公布日期
1931.03.24
申请号
US19280279274
申请日期
1928.05.21
申请人
WILLIAM J. CAMERON
发明人
CAMERON ALEXANDER S.
分类号
G03B21/00
主分类号
G03B21/00
代理机构
代理人
主权项
地址
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