发明授权
US2930285A Continuously operated device for projecting still picture film with synchronized sound
失效
连续操作的设备,用于投影具有同步声音的静态图像胶片
- 专利标题: Continuously operated device for projecting still picture film with synchronized sound
- 专利标题(中): 连续操作的设备,用于投影具有同步声音的静态图像胶片
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申请号: US56038556申请日: 1956-01-20
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公开(公告)号: US2930285A公开(公告)日: 1960-03-29
- 发明人: PLATT STEPHEN A
- 申请人: PLATT STEPHEN A
- 专利权人: Stephen A Platt
- 当前专利权人: Stephen A Platt
- 优先权: US56038556 1956-01-20
- 主分类号: G03B31/06
- IPC分类号: G03B31/06
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