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GB190414981A
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A Method for Protecting Propelling Gear and other Apparatus on Ship-board from Air used for Facilitating the Propulsion.
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US904992A
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Process for protecting propelling-gear and other apparatus on shipboard from air used for facilitating the propulsion.
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GB190213542A
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Improvements in Apparatus for Facilitating the Propulsion of Vessels and other Floating or Submerged Bodies.
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US725137A
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Air-ejecting apparatus for vessels.
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GB189918748A
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Method and Apparatus for Facilitating the Propulsion of Vessels and other Floating or Submerged Bodies.
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US640946A
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Air-ejecting apparatus for vessels.
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