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发明名称
FRICTION SHOCK ABSORBING MECHANISMS FOR RAILWAY DRAFT RIGGINGS
摘要
申请公布号
CA509987(A)
申请公布日期
1955.02.08
申请号
CAD509987
申请日期
申请人
W. H. MINER
发明人
WILLIAM E. WITHALL
分类号
主分类号
代理机构
代理人
主权项
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