Sackhandling
http://www.freepatentsonline.com/EP0852553.html
http://v3.espacenet.com/publicationDetails/biblio?DB=EPODOC&at=11&locale=en_V3&FT=D&CC=NZ&NR=316880A&KC=A
http://v3.espacenet.com/publicationDetails/biblio?CC=EP&NR=0852553&KC=&FT=E
http://www.wipo.int/pctdb/en/wo.jsp?wo=1997012810


Verschliesslinie
http://www.patent-de.com/19960801/EP0670799.html
http://www.wipo.int/pctdb/en/wo.jsp?wo=1995009765

US
http://www.freepatentsonline.com/1782218.pdf
http://www.freepatentsonline.com/1782218.html


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