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发明名称
摘要
申请公布号
DE3931511(C2)
申请公布日期
1993.05.19
申请号
DE19893931511
申请日期
1989.09.21
申请人
RICOH CO., LTD., TOKIO/TOKYO, JP
发明人
SHOBU, TOSHIFUMI, ATSUGI, KANAGAWA, JP;SHIBATA, HIROSHI, ZAMA, KANAGAWA, JP;OGASAWARA, FUMIHIRO, EBINA, KANAGAWA, JP
分类号
H04L29/02;H04L29/06;H04L29/12;H04N1/333;H04Q11/04
主分类号
H04L29/02
代理机构
代理人
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