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发明名称
METHOD OF GRADING THE RAILWAY LINE AND APPLIANCE FOR EXECUTING THE SAME
摘要
申请公布号
CS220758(B2)
申请公布日期
1983.04.29
申请号
CS19780008629
申请日期
1978.12.20
申请人
CANRON CORP.,US
发明人
SHUPE,CHARLES A.,CA
分类号
G01C9/00;B61K9/08;E01B35/00;G01B21/00;G01B21/20;(IPC1-7):E01B27/02
主分类号
G01C9/00
代理机构
代理人
主权项
地址
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