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GB0513519D0
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Improvements in control systems
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US1279783A
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Method and apparatus for controlling and pumping oil-wells.
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GB122278A
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Improvements in Apparatus used in Air-lift Pumps.
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GB117567A
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An Improved Method and Apparatus for Controlling and Pumping Oil Wells.
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US857768A
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Method and apparatus for raising liquids by compressed air.
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GB190420801A
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Improved Method and Apparatus for Raising Liquids by Compressed Air.
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GB190315309A
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Improvements in and relating to Apparatus for Raising Liquids from Deep Wells by Compressed Air.
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GB190300081A
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Improvements in Packers for Oil and other Wells.
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US717048A
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Apparatus for raising liquids, such as oil, from oil-wells by direct air-pressure.
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GB190125574A
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Improvements in and relating to Methods and Apparatus for Raising Liquids from Deep Wells by Means of Compressed Air.
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GB190122765A
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Improvements in Raising Liquids such as Oil from Oil Wells by Direct Air Pressure.
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GB190116803A
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Improvements in Means or Apparatus for Raising and Forcing Liquids such as Oil in Oil Wells.
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