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Cordless loud speaking telephone

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04M-011/00
  • H04M-009/08
출원번호 US-0598642 (1990-10-19)
우선권정보 JP-0044073 (1989-02-23); JP-0201443 (1989-08-04)
국제출원번호 PCT/JP90/00206 (1990-02-21)
§371/§102 date 19901019 (19901019)
국제공개번호 WO-9010347 (1990-09-07)
발명자 / 주소
  • Sudo Yozo (Yamato JPX)
출원인 / 주소
  • Fujitsu Limited (Kawasaki JPX 03)
인용정보 피인용 횟수 : 54  인용 특허 : 0

초록

A cordless loud-speaking telephone of the present invention is shaped to be placed on a table or desk or to be suspended from a ceiling. Unlike cordless portable telephones of the handy transceiver type, it enables hands-free talking or communication through a receiving speaker and a transmitting mi

대표청구항

A cordless loud-speaking telephone comprising a casing, radio transmitting and receiving circuits and a receiving speaker arranged in the casing, an antenna conductor projecting from the casing, a transmitting microphone attached to the antenna conductor which serves as a conductor for voice current

이 특허를 인용한 특허 (54)

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  3. Matz,William R.; Weaver,Timothy H., Antenna alignment devices.
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  19. Tuttle, Mark E., Electronic communication devices, methods of forming electrical communication devices, and communications methods.
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  23. Garey, Kenneth E., Full-duplex speakerphone with wireless microphone.
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  50. Tuttle, John R., System and method to track articles at a point of origin and at a point of destination using RFID.
  51. Mahmoud,Mohamed S.; Rosario,Edward N.; Rao,Basrur R., System for co-planar dual-band micro-strip patch antenna.
  52. Rao, B. Rama; Smolinski, Michael; Quach, Cuong; Rosario, Eddie N., Triple band GPS trap-loaded inverted L antenna array.
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  54. Smith Freddie W., Wireless communication packages, a radio frequency identification device communication package, an appendage, a method of communicating, and a method of forming a wireless communication package.
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