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GB201408057D0
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Apparatus for multistep switching
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FR2958813A1
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Connecting a polypase winding to generate an alternative field
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EP0862100A1
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Logical switchover process and arrangement for performing the same
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US4325231A
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Cascade cooling arrangement
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DE2628007A1
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PROCESS AND SYSTEM FOR GENERATING COLD WITH AT LEAST ONE INCORPORATED CASCADE CIRCUIT
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US3964891A
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Process and arrangement for cooling fluids
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US4094655A
|
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Arrangement for cooling fluids
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NL168327B
|
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Method and apparatus for cold generation with at least one cascade circuit working with a refrigerant mixture and at least a pre-cooling circuit.
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