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经营范围
发明名称
CHROMA KEY DEVICE
摘要
申请公布号
JPH01236793(A)
申请公布日期
1989.09.21
申请号
JP19880062782
申请日期
1988.03.16
申请人
NEC CORP
发明人
KOYAMA YUICHI
分类号
H04N9/75
主分类号
H04N9/75
代理机构
代理人
主权项
地址
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