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发明名称
WRITING AND READING BOARD
摘要
申请公布号
PL167069(B1)
申请公布日期
1995.07.31
申请号
PL19920294539
申请日期
1992.05.14
申请人
TRETER ZBIGNIEW
发明人
TRETER ZBIGNIEW
分类号
A47B19/00;A47B41/00;(IPC1-7):A47B19/00
主分类号
A47B19/00
代理机构
代理人
主权项
地址
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