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发明名称
平均上下双齿轮式无声电影机加装磁性发声机械构造
摘要
申请公布号
TW001740
申请公布日期
1962.05.01
申请号
TW005494
申请日期
1961.06.06
申请人
李祥
发明人
李祥
分类号
G03B
主分类号
G03B
代理机构
代理人
主权项
地址
台北巿中山北路2段4号
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