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Reciprocating machine
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Patent number 4,919,104
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Issue date Apr 24, 1990
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Hartmut Hensel
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G11 - INFORMATION STORAGE
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Rotor with stabilizing magnets
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Patent number 4,880,362
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Issue date Nov 14, 1989
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Karsten A. Laing
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Wind machine
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Patent number 4,710,100
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Issue date Dec 1, 1987
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Oliver Laing
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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