|
| US4239132 | 31 Oct 1978 | 16 Dic 1980 | Containaire, Inc. | Apparatus for facilitating inflow through closure threads of dispenser |
| US4420100 | 16 Ene 1981 | 13 Dic 1983 | Containaire, Inc. | Dispensing apparatus |
| US4834267 | 2 Nov 1987 | 30 May 1989 | Elkay Manufacturing Company | Bottled water cooler air filter |
| US5111966 | 18 May 1990 | 12 May 1992 | Kelco Water Engineering, Inc. | Water dispenser |
| US5194038 | 29 Jun 1992 | 16 Mar 1993 | Huron Plastics Group, Inc. | One-way air valve |
| US5441179 | 18 May 1994 | 15 Ago 1995 | | Ultra-violet disinfecting device adapted for use with bottled water dispenser |
| US5931352 | 11 Sep 1997 | 3 Ago 1999 | Knight Plastics, Inc. | Snap-fit non-drip valve and method for assembly thereof |
| US5989469 | 11 Sep 1997 | 23 Nov 1999 | Knight Plastics, Inc. | Method for making a non-drip valve for an inverted container |
