Kazutada Tatsukura

Follow

Person

Tokorozawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Key telephone systems
- Patent number 4,280,022
- Issue date Jul 21, 1981
- Iwasaki Tsushinki Kabushiki Kaisha
- Koichi Sekiguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE