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发明名称
Control system for handling varying loads
摘要
申请公布号
US3330531(A)
申请公布日期
1967.07.11
申请号
US19640361811
申请日期
1964.04.22
申请人
BOWEN TOOLS, INC.
发明人
SLATOR DAMON T.;PILCHER DAVID W.
分类号
E21B19/08
主分类号
E21B19/08
代理机构
代理人
主权项
地址
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