Ernst Keller
citizen of Glattfelden, Winterthur
Commercial register
Member of the board of directors · sole signature · Winterthur
until Nov 18, 2016Member of the foundation board · no signing authority · Küsnacht (ZH)
until Dec 15, 2015Member of the foundation board · joint signature by two
until Feb 5, 2015Member of the foundation board · joint signature by two
until Jan 8, 2015Member of the foundation board · Secretary of the board of directors · joint signature by two · Winterthur
until Nov 26, 2015Managing director · sole signature · Glattfelden
until Jan 12, 2001StvS · joint signature by two · Winterthur
until Dec 1, 1994Trademarks, designs and patents
Drainagerohr für eine rückspülbare Drainagerohr-Filteranlage
Swiss patent · CH679126 · Inventor
Rückspülbare Mehrschicht-Filteranlage
Swiss patent · CH678820 · Inventor
Rückspülbare Filteranlage
Swiss patent · CH672892 · Inventor
Vorrichtung zur Fixierung von Drainagerohren
Swiss patent · CH661954 · Inventor