Toshie Takahashi

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Fukushima, JP

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Patents Grantslast 30 patents

Information Patent Grant
Telephone terminal and telephone exchange system accommodating the...
- Patent number 6,487,279
- Issue date Nov 26, 2002
- Hitachi Telecom Technologies, Ltd.
- Toshie Takahashi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Telephone terminal and telephone exchange system accommodating the...
- Patent number 6,044,136
- Issue date Mar 28, 2000
- Hitachi Telecom Technolgies, Ltd.
- Toshie Takahashi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Line status display system for telephone exchange system
- Patent number 5,471,525
- Issue date Nov 28, 1995
- Hitachi Telecom Technologies, Ltd.
- Yoshihisa Domoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Trading telephone
- Patent number 5,465,292
- Issue date Nov 7, 1995
- Hitachi Telecom Technologies, Ltd.
- Toshie Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE