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发明名称
Portable movie film viewer
摘要
申请公布号
US3306697(A)
申请公布日期
1967.02.28
申请号
US19650434241
申请日期
1965.02.23
申请人
NEMETH OTTO R
发明人
NEMETH OTTO R.
分类号
G03B1/18
主分类号
G03B1/18
代理机构
代理人
主权项
地址
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