Leak detection
First Claim
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2. IN A METHOD OF DETECTING LEAKS IN AN UNDERGROUND VESSEL, THE STEPS OF INTRODUCING INTO THE VESSEL A NONCORROSIVE, NONTOXIC, ESSENTIALLY LIQUID COMPOSITION COMPRISING WATER AND NITROUS OXIDE DISSOLVED HEREIN, MAINTAINING THE PRESSURE OF THE LIQUID COMPOSITION IN THE VESSEL AT A PRESSURE SUBSTANTIALLY ABOVE ATMOSPHERIC PRESSURE AND ANALYZING THE ATMOSPHERE AT ABOUT THE SURFACE OF THE GROUND AND ABOVE TH VESSEL FOR THE PRESENCE OF NITROUS
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2 Claims
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2. IN A METHOD OF DETECTING LEAKS IN AN UNDERGROUND VESSEL, THE STEPS OF INTRODUCING INTO THE VESSEL A NONCORROSIVE, NONTOXIC, ESSENTIALLY LIQUID COMPOSITION COMPRISING WATER AND NITROUS OXIDE DISSOLVED HEREIN, MAINTAINING THE PRESSURE OF THE LIQUID COMPOSITION IN THE VESSEL AT A PRESSURE SUBSTANTIALLY ABOVE ATMOSPHERIC PRESSURE AND ANALYZING THE ATMOSPHERE AT ABOUT THE SURFACE OF THE GROUND AND ABOVE TH VESSEL FOR THE PRESENCE OF NITROUS
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Current AssigneeWard M. Champion
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Original AssigneeWard M. Champion
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InventorsChampion, Ward M.
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Application NumberUS03/770,125Time in Patent Office1,631 DaysField of SearchUS Class Current73/40.50RCPC Class CodesG01M 3/22 for pipes, cables or tubes;...G01M 3/38 by using light G01M3/02 tak...
