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发明名称
BLACKBOARD
摘要
申请公布号
JPH08132784(A)
申请公布日期
1996.05.28
申请号
JP19940271348
申请日期
1994.11.04
申请人
TEC CORP
发明人
TSUJIMURA SUSUMU
分类号
B43L1/04;H04N1/00;(IPC1-7):B43L1/04
主分类号
B43L1/04
代理机构
代理人
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地址
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