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[미국특허] Cordless telephone system 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04M-001/72
  • H04M-003/22
출원번호 US-0386722 (1982-06-09)
발명자 / 주소
  • Baker William E. (Holmdel NJ) Froehlich Fritz E. (Little Silver NJ) Mattes Hans G. (Indianapolis NJ)
출원인 / 주소
  • Bell Telephone Laboratories, Incorporated (Murray Hill NJ 02)
인용정보 피인용 횟수 : 146  인용 특허 : 5

초록 ▼

The present key telephone system comprises cordless telephone stations (FIGS. 6 and 7) which communicate over a line-of-sight transmission end link (276 or 277). The system further comprises a central controller (101) for switching communications between the cordless stations and to the message netw

대표청구항 ▼

A cordless communication system comprising: a central controller for switching communications, a plurality of subsystem controllers connected to the central controller, each subsystem controller having a plurality of terminals associated therewith, each terminal having a unique address, each subsyst

이 특허에 인용된 특허 (5) 인용/피인용 타임라인 분석

  1. Morrell Wilfred L. (Boca Raton FL) Levine William M. (Lauderdale Lake FL), Electronic key telephone system with bi-directional serial data stream station control.
    상세보기
  2. Pickett Terence D. (Waterloo IA) Formwalt ; Jr. Charles W. (Cedar Falls IA), Fiber optic signal conditioning circuit.
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    상세보기
  5. Kunde Gerhard (Munich DEX) Schoen Siegfried (Starnberg DEX) Trimmel Herwig (Puchheim DEX), Telephone subscriber station.
    상세보기

이 특허를 인용한 특허 (146) 인용/피인용 타임라인 분석

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해당 특허가 속한 카테고리에서 활용도가 높은 상위 5개 콘텐츠를 보여줍니다.
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