Shuji Fujitsuka

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Telephone exchange apparatus
- Patent number 6,731,721
- Issue date May 4, 2004
- Kabuhsiki Kaisha Toshiba
- Toshiaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone exchange apparatus
- Patent number 6,243,442
- Issue date Jun 5, 2001
- Kabushiki Kaisha Toshiba
- Toshiaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Private electronic exchange apparatus having a plurality of extensi...
- Patent number 5,825,866
- Issue date Oct 20, 1998
- Kabushiki Kaisha Toshiba
- Shuji Fujitsuka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Communication apparatus, private branch exchange apparatus, mainten...
- Publication number 20020196925
- Publication date Dec 26, 2002
- Kabushiki Kaisha Toshiba
- Shuji Yamazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Telephone exchange apparatus
- Publication number 20010028702
- Publication date Oct 11, 2001
- Kabushiki Kaisha Toshiba
- Toshiaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE