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Invention Grant
US3480720A Hook button control device of an automatic telephone answering apparatus 失效
自动电话听筒按钮控制装置

  • Patent Title: Hook button control device of an automatic telephone answering apparatus
  • Patent Title (中): 自动电话听筒按钮控制装置
  • Application No.: US3480720D
    Application Date: 1967-03-17
  • Publication No.: US3480720A
    Publication Date: 1969-11-25
  • Inventor: AIBA HIROSHI
  • Applicant: HIROSHI AIBA
  • Assignee: Hiroshi Aiba
  • Current Assignee: Hiroshi Aiba
  • Priority: JP1642666 1966-03-18
  • Main IPC: H04M1/08
  • IPC: H04M1/08 ;  H04M1/654 ;  H04M1/64
Hook button control device of an automatic telephone answering apparatus
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