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Combination protection room
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Patent number 4,902,851
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Issue date Feb 20, 1990
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ABS Allgemeiner Brandschutz
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Klaus Richter
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Walk-in shelter
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Patent number 4,729,326
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Issue date Mar 8, 1988
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Allgemeiner Brandschutz G.u.M. Breivogel GmbH
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Klaus Richter
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Walk-in shelter
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Patent number 4,628,826
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Issue date Dec 16, 1986
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Brandschutz GmbH
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Klaus Richter
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES