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Air filtering system
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Patent number 4,217,119
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Issue date Aug 12, 1980
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LTG Lufttechnische GmbH
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Joachim Furstenberg
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Filtering apparatus
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Patent number 4,162,148
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Issue date Jul 24, 1979
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LTG Lufttechnische GmbH
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Joachim Furstenberg
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D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
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Air cleaning apparatus
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Patent number 4,134,745
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Issue date Jan 16, 1979
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LTG Lufttechnische GmbH
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Joachim Furstenberg
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Double twisting machine
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Patent number 4,107,910
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Issue date Aug 22, 1978
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LTG Lufttechnische GmbH
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Joachim Furstenberg
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D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING