Tamotsu Wakabayashi

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electronic exchange and key telephone system
- Patent number 6,687,361
- Issue date Feb 3, 2004
- Kabushiki Kaisha Toshiba
- Tamotsu Wakabayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Floppy disc drive apparatus for preventing absorption between a hea...
- Patent number 4,969,057
- Issue date Nov 6, 1990
- Kabushiki Kaisha Toshiba
- Shunji Inomata
- G11 - INFORMATION STORAGE
Information Patent Grant
Telephone system allowing hold releasing request from central offic...
- Patent number 4,852,158
- Issue date Jul 25, 1989
- Kabushiki Kaisha Toshiba
- Masayuki Tsurusaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE