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发明名称
SUPER-FLEVATION AND GRADIENT MEASURING DEVICES FOR TRACK
摘要
申请公布号
US3514862(A)
申请公布日期
1970.06.02
申请号
USD3514862
申请日期
1967.09.19
申请人
HEINRICH HELGEMEIR
发明人
HEINRICH HELGEMEIR
分类号
E01B35/00;E01B35/02;(IPC1-7):E01B29/04
主分类号
E01B35/00
代理机构
代理人
主权项
地址
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