|
| US4691721 | 7 Dic 1984 | 8 Sep 1987 | Ecolab Inc. | Volumetric gravity feed liquid dispenser |
| US4763676 | 9 Ene 1987 | 16 Ago 1988 | Ecolab Inc. | Liquid dispenser |
| US5139127 | 1 Oct 1991 | 18 Ago 1992 | Unidynamics Corporation | Beverage dispenser detecting mechanism |
| US6349852 | 4 May 2000 | 26 Feb 2002 | Bunn-O-Matic Corporation | Cold beverage refill system |
| US6446835 | 26 Jun 2001 | 10 Sep 2002 | | Cold beverage refill system |
| US7036175 | 19 Feb 2002 | 2 May 2006 | Maytag Corporation | Washing machine with pay activated bulk detergent dispenser |
