GB201013737D0
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Six stroke "Blackburn Cycle" engine
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GB0921441D0
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Blackburn cycle engine with six stroke cycle
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GB0918048D0
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"Blackburn Cycle" hydraulic valves
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GB0908975D0
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Blackburn cycle hydraulic valves
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GB0819896D0
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Blackburn cycle hydraulic values
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GB0806753D0
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Blackburn cycle hydraulic valves
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GB0622280D0
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Variable fulcrum position for 8 stroke engines
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GB0426023D0
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Retractable cam
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GB0325341D0
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Power control valve for 8 stroke and 4 stroke engines
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GB9218577D0
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Piston engine valves
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GB9105602D0
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Piston engine cycles
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