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发明名称
OPTICAL FILTRATION FOR UNDERWATER VIEWING, PHOTOGRAPHY, AND THE LIKE
摘要
申请公布号
US3571649(A)
申请公布日期
1971.03.23
申请号
USD3571649
申请日期
1969.01.21
申请人
DAVID N. BUSH JR.
发明人
DAVID N. BUSH JR.
分类号
G02B23/16;G02B23/22;G03B17/08;(IPC1-7):H01J5/16;H01J61/40;H01K1/26
主分类号
G02B23/16
代理机构
代理人
主权项
地址
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