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发明名称
TEACHING APPARATUS
摘要
申请公布号
GB1283341(A)
申请公布日期
1972.07.26
申请号
GB19680041014
申请日期
1968.08.28
申请人
WOOL JUTE AND FLAX INDUSTRY TRAINING BOARD
发明人
COLIN STUART LAMBERT;ALAN FERRIS DAVIDSON;DAVID EDWARD DONALDSON;JOHN ANTHONY HEATHCOTE OUCHTERLONY
分类号
G09B7/06;G09B9/00
主分类号
G09B7/06
代理机构
代理人
主权项
地址
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