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发明名称
Delayed action fuse
摘要
申请公布号
US2363234(A)
申请公布日期
1944.11.21
申请号
US19410413762
申请日期
1941.10.06
申请人
SCHLUMBERGER WELL SURVEYING CORPORATION
发明人
DOLL HENRI-GEORGES
分类号
E21B43/1185;F42D1/05;F42D1/055
主分类号
E21B43/1185
代理机构
代理人
主权项
地址
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