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Axial fan
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Patent number 4,514,140
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Issue date Apr 30, 1985
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List; Hans
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Franz Knopf
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Internal combustion engine
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Patent number 4,428,338
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Issue date Jan 31, 1984
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List; Hans
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Othmar Skatsche
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Internal combustion engine
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Patent number 4,411,227
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Issue date Oct 25, 1983
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List; Hans
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Gerhard Feichtinger
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Squeezed tube valve
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Patent number 4,369,951
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Issue date Jan 25, 1983
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List; Hans
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Hermann Marsoner
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL