Yoshimi Iijima

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Kawasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Call meter signal receiver for subscriber's private metering of tel...
- Patent number 4,750,200
- Issue date Jun 7, 1988
- Fujitsu Limited
- Kazuhiro Sato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Calling signal transmission apparatus
- Patent number 4,748,659
- Issue date May 31, 1988
- Fujitsu Limited
- Kiyoshi Kasahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communications system for transmitting and receiving data and voice...
- Patent number 4,670,874
- Issue date Jun 2, 1987
- Fujitsu Limited
- Kazuhiro Sato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Battery feed circuit for subscriber line
- Patent number 4,631,366
- Issue date Dec 23, 1986
- Fujitsu Limited
- Kenji Takato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE