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Extraction valve head for tanks
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Patent number 4,903,722
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Issue date Feb 27, 1990
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Merck Patent Gesellschaft mit beschraenkter Haftung
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Frank Joseph
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Valves for chemical containers
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Patent number 4,805,675
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Issue date Feb 21, 1989
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Merck Patent Gesellschaft mit beschrankter Haftung
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Frank Joseph
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Transport container
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Patent number 4,741,457
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Issue date May 3, 1988
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Merck Patent Gesellschaft mit beschraenkter Haftung
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Frank Joseph
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Container for aggressive liquids
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Patent number 4,738,356
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Issue date Apr 19, 1988
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Merck Patent Gesellschaft mit beschrankter Haftung
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Werner Gunkel
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F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS