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Method of establishing communication between wells
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Photoelectric apparatus
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Recovery of hydrocarbons
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Recovery of hydrocarbons from subterranean shale formations
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Method using gas means to profile a subterranean oil-bearing formation
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Vacuum framing apparatus
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Bottom hole burner
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Automatic hang-off for reciprocating rod
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Portable oscillograph
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Shadow box
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Method for tracing the flow of h2o
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Numbering device for timing lines on a seismogram
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Method of preventing loss of gaseous drilling fluid
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Device for measuring gas
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Apparatus to automatically control transmitter power
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Photoelectric scanning method and apparatus
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Process for recovering viscous crude oil from unconsolidated formations
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Cathode ray tube deflection circuit control apparatus
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Method for selectively plugging a subterranean location in a well with liquid organic resin-forming material
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Subterranean interface locator
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