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EP0103685B1
(de )
1988-08-24
Versorgungsgerät für die Anreicherung von Aquariumwasser mit CO2-gas
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DE91607C
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AT402400B
(de )
1997-04-25
Kläranlage, insbesondere bodenfilterkläranlage
DE131109C
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DE19527970A1
(de )
1996-01-25
Kläranlage, insbesondere Bodenfilterkläranlage
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DE158152C
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AT18578B
(de )
1904-12-10
Azetylenentwickler mit Regelung des Wasserzulaufes zum Karbid durch Schwankungen des Wasserspiegels.
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