申请人 |
NIPPON TELEGRAPH AND TELEPHONE CORPORATION;NAKAYAMA, JOUJI;YAMAMOTO, TETSUYA;SHIMOKURA, KEN-ICHIRO;YABUUCHI, TSUTOMU;ENDO, KIMITAKA;IMAEDA, TAKASHI |
发明人 |
NAKAYAMA, JOUJI;YAMAMOTO, TETSUYA;SHIMOKURA, KEN-ICHIRO;YABUUCHI, TSUTOMU;ENDO, KIMITAKA;IMAEDA, TAKASHI |