Aligning means for shaped charge perforating apparatus
United States Patent 2750885

Inventors:
Marcel, Schlumberger
Publication Date:
06/19/1956
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Assignee:
Borg, Warner
Primary Class:
175/4.600
Other Classes:
285/305, 89/1.150
International Classes:
E21B43/117; F42B1/02; F42B3/08; F42B3/26; F42B3/28; E21B43/11; F42B1/00; F42B3/00
US Patent References:
2649046Explosive package
2655619Selective charge-firing equipment
2662474Well casing perforator
2680406Explosive container for gun perforators
2687823Gun perforator port seal
Foreign References:
GB610106A