Katsunori Utsumi

Follow

Person

Hino-shi, JP

People

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

Patents Applicationslast 30 patents

Information Patent Application
Exchange system, telephone exchange apparatus, and computer apparatus
- Publication number 20010028710
- Publication date Oct 11, 2001
- Kabushiki Kaisha Toshiba
- Yasumasa Sasaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE