申请人 |
NIPPON TELEGRAPH AND TELEPHONE CORP., TOKIO/TOKYO, JP;SUMITOMO ELECTRIC INDUSTRIES, LTD., OSAKA, JP |
发明人 |
OHTSUKA, AKIRA C/O ITAMI WORKS OF SUMITOMO, ITAMI-SHI HYOGO, JP;GOTO, TOMOJI C/O ITAMI WORKS OF SUMITOMO, ITAMI-SHI HYOGO, JP;IDA, MASAO, MACHIDA-SHI TOKYO, JP |