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发明名称
Display device
摘要
申请公布号
US1792541(A)
申请公布日期
1931.02.17
申请号
US19280306878
申请日期
1928.09.19
申请人
R. R. HEYWOOD COMPANY, INC.
发明人
IRWIN HENRY E.
分类号
B42D15/04
主分类号
B42D15/04
代理机构
代理人
主权项
地址
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