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发明名称
A RAMP WITH AN EXTENSION
摘要
申请公布号
GB1261456(A)
申请公布日期
1972.01.26
申请号
GB19690014907
申请日期
1969.03.21
申请人
KURT ALTEN
发明人
KURT ALTEN
分类号
B65G69/28
主分类号
B65G69/28
代理机构
代理人
主权项
地址
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