Apparatus for obtaining fluid samples from subterranean formations
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1. A RETRIEVABLE DEVICE FOR LOWERING THROUGH A DRILL STRING DURING DRILLING OPERATIONS FOR OBTAINING SAMPLES OR SPECIMENS OF FLUID FROM THE FORMATION BELOW THE BOTTOM OF AN OIL WELL, COMPRISING A PAIR OF SLIDABLY CONNECTED MEMBERS, ONE MEMBER CARRYING A SHAPED CHARGE AND A DETONATOR, THE OTHER MEMBER HAVING A FIRING PIN IN COOPERATIVE RELATION WITH THE DETONATOR AND HAVING A LONGITUDINAL BORE OPEN AT OPPOSITE ENDS, SAID FIRING PIN BEING MOUNTED ON SAID OTHER MEMBER FOR PROJECTION BELOW THE
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1 Claim
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1. A RETRIEVABLE DEVICE FOR LOWERING THROUGH A DRILL STRING DURING DRILLING OPERATIONS FOR OBTAINING SAMPLES OR SPECIMENS OF FLUID FROM THE FORMATION BELOW THE BOTTOM OF AN OIL WELL, COMPRISING A PAIR OF SLIDABLY CONNECTED MEMBERS, ONE MEMBER CARRYING A SHAPED CHARGE AND A DETONATOR, THE OTHER MEMBER HAVING A FIRING PIN IN COOPERATIVE RELATION WITH THE DETONATOR AND HAVING A LONGITUDINAL BORE OPEN AT OPPOSITE ENDS, SAID FIRING PIN BEING MOUNTED ON SAID OTHER MEMBER FOR PROJECTION BELOW THE
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