www.depatisnet.de/ipc/index.html
International Patent Classification according to the Strasbourg Agreement

www.dpma.de/bmj/anlage_1.pdf
Nice Classification of Goods and Services provided by the German Patent and Trademark Office

www.dpma.de/bmj/anlage_2.pdf
Official recommendation list of the German Patent and Trademark Office for classification of goods for trademark applications

www.dpma.de/bmj/anlage_3.pdf
Official recommendation list of the German Patent and Trademark Office for classification of services for trademark applications

www.dpma.de/suche/klass/gsm/warenliste_123.pdf
International Classification for Industrial Designs according to the Locarno Agreement

www.dpma.de/suche/wien.pdf
International Classification of the Figurative Elements of Marks under the Vienna Agreement

oami.eu.int/search/Euronice/la/de_en_expressionscreen.cfm
EURONICE Nice Classification Data