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Fire retardant elements
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Patent number 4,992,481
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Issue date Feb 12, 1991
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Bayer Aktiengesellschaft
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Wulf von Bonin
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Lightweight composite material
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Patent number 4,966,801
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Issue date Oct 30, 1990
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Bayer Aktiengesellschaft
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Robert Becker
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Flexible circuits
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Patent number 4,847,139
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Issue date Jul 11, 1989
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Bayer Aktiengesellschaft
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Gerhard D. Wolf
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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Metallized membrane systems
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Patent number 4,804,475
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Issue date Feb 14, 1989
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Bayer Aktiengesellschaft
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Kirkor Sirinyan
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Electrical printed circuit boards
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Patent number 4,728,560
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Issue date Mar 1, 1988
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Bayer Aktiengesellschaft
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Kirkor Sirinyan
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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Constructional material
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Patent number 4,570,622
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Issue date Feb 18, 1986
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Bayer Aktiengesellschaft
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Wulf von Bonin
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE