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经营范围
发明名称
Strip film and viewer
摘要
申请公布号
US2937566(A)
申请公布日期
1960.05.24
申请号
US19570658692
申请日期
1957.05.13
申请人
WARD JR ROBERT E;WARD JOAN M
发明人
JR. ROBERT E. WARD,;WARD JOAN M.
分类号
G02B27/06;G03B15/08
主分类号
G02B27/06
代理机构
代理人
主权项
地址
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