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经营范围
发明名称
PULSATING FALL RETARDER
摘要
申请公布号
US3489258(A)
申请公布日期
1970.01.13
申请号
USD3489258
申请日期
1968.04.29
申请人
UNITED STATES STEEL CORP.
发明人
WILLIAM H. STOKES
分类号
B65G69/00;(IPC1-7):B65G11/20;B65G15/32
主分类号
B65G69/00
代理机构
代理人
主权项
地址
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