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经营范围
发明名称
ELECTRONIC BLACKBOARD
摘要
申请公布号
JPH04345898(A)
申请公布日期
1992.12.01
申请号
JP19910119843
申请日期
1991.05.24
申请人
MATSUSHITA GRAPHIC COMMUN SYST INC
发明人
WATABE TOSHIO;ABE YUICHI;MORIKAWA HIROTO
分类号
B43L1/04;H04N1/00;H04N1/04
主分类号
B43L1/04
代理机构
代理人
主权项
地址
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