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Filter arrangement
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Patent number 4,828,590
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Issue date May 9, 1989
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Draegerwerk Aktiengesellschaft
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Wolfgang Eckstein
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B60 - VEHICLES IN GENERAL
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Protective breathing device
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Patent number 4,821,711
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Issue date Apr 18, 1989
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Draegerwerk AG
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Wolfgang Eckstein
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A62 - LIFE-SAVING FIRE-FIGHTING
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Chemical oxygen generator
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Patent number 4,822,572
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Issue date Apr 18, 1989
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Draegerwerk AG
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Carl E. van der Smissen
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C01 - INORGANIC CHEMISTRY
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Breathing apparatus
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Patent number 4,805,608
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Issue date Feb 21, 1989
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Dragerwerk Aktiengesellschaft
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Wolfgang Eckstein
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A62 - LIFE-SAVING FIRE-FIGHTING
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Potassium superoxide pellet
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Patent number 4,731,197
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Issue date Mar 15, 1988
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Dragerwerk Aktiengesellschaft
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Wolfgang Eckstein
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C01 - INORGANIC CHEMISTRY
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Electrostatic filter construction
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Patent number 4,555,252
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Issue date Nov 26, 1985
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Dragerwerk Aktiengesellschaft
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Wolfgang Eckstein
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B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
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Gas dosimeter construction
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Patent number 4,528,160
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Issue date Jul 9, 1985
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Dragerwerk Aktiengesellschaft
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Wolfgang Eckstein
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G01 - MEASURING TESTING
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Breathing device package
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Patent number 4,467,795
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Issue date Aug 28, 1984
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Dragerwerk Aktiengesellschaft
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Wolfgang Eckstein
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A62 - LIFE-SAVING FIRE-FIGHTING
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Sampling tube having closing caps
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Patent number 4,392,389
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Issue date Jul 12, 1983
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Dragerwerk Aktiengesellschaft
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Wolfgang Eckstein
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Filter construction
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Patent number 4,290,792
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Issue date Sep 22, 1981
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Dragerwerk Aktiengesellschaft
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Wolfgang Eckstein
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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