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Invention Grant
US2002188A Method and apparatus for forming sound motion picture records 失效
用于形成声音动态影像记录的方法和装置

  • Patent Title: Method and apparatus for forming sound motion picture records
  • Patent Title (中): 用于形成声音动态影像记录的方法和装置
  • Application No.: US38666329
    Application Date: 1929-08-17
  • Publication No.: US2002188A
    Publication Date: 1935-05-21
  • Inventor: ROSS OSCAR A
  • Applicant: ROSS OSCAR A
  • Assignee: Oscar A Ross
  • Current Assignee: Oscar A Ross
  • Priority: US38666329 1929-08-17
  • Main IPC: G03B31/00
  • IPC: G03B31/00
Method and apparatus for forming sound motion picture records
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