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发明名称
Telephone exchange equipment
摘要
申请公布号
USD464644(S1)
申请公布日期
2002.10.22
申请号
US20010137385F
申请日期
2001.02.21
申请人
HITACHI, LTD.
发明人
OHWADA TAKASHI;YOSHIKAWA HIROSHI;UMEDA TOSHIHIKO
分类号
主分类号
代理机构
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