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发明名称
Vorrichtung zum Verriegeln einer Stroemungs-Steuereinrichtung in einem Steigrohr
摘要
申请公布号
DE1161225(B)
申请公布日期
1964.01.16
申请号
DE1959O006854
申请日期
1959.07.03
申请人
OTIS ENGINEERING CORPORATION
发明人
SCHRAMM HARRY BOSE
分类号
E21B23/02
主分类号
E21B23/02
代理机构
代理人
主权项
地址
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