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IE792502L
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Positive displacement device
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EP0013495A1
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Positive displacement device
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GB2043795A
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Positive-displacement fluid-machines
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JPS5381582A
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Method and apparatus for applying linings on pipe
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GB1548408A
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Method of lining a pipe
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Solar heating system heat collector composite tube - has plastics tube adhesively secured inside aluminium tube by intermediate layer
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DE2629483A1
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FLUID FLOW CONTROL DEVICE
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FR2307210A1
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Panels for absorbing solar energy - having layer contg. tubes consisting of rigid metal sheath and flexible plastic lining
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