|
| US4392028 | 6 Feb 1981 | 5 Jul 1983 | | Pay telephone with sanitized tissue dispenser |
| US4582966 | 28 Nov 1983 | 15 Abr 1986 | | Tele disc guard |
| US4751731 | 14 Ene 1987 | 14 Jun 1988 | | Telephone handset disinfecting and/or deodorizing device |
| US4826597 | 25 Jul 1986 | 2 May 1989 | Pall Corporation | Filter assembly with removable sheet |
| US4953703 | 18 May 1989 | 4 Sep 1990 | | Antibacterial protective element for microphones and telephone receivers, and package containing said element |
| US5136640 | 29 May 1990 | 4 Ago 1992 | | Replaceable aromatic sticker for use in a telephone handset |
| US5448025 | 19 Jul 1994 | 5 Sep 1995 | | Cover for stethoscope head |
| US5794798 | 5 Dic 1996 | 18 Ago 1998 | Samsung Electronics Co., Ltd. | Wafer holder |
| US6215871 | 3 May 1996 | 10 Abr 2001 | | Sanitary cover for telephone and method of making same |
| US6256388 | 15 Ene 1999 | 3 Jul 2001 | | Sanitizing device for a telephone handset |
| US7488364 | 30 Jul 2008 | 10 Feb 2009 | International Business Machines Corporation | Layered disposable air filter with dust capture topology |
| US7823690 | 25 Jun 2008 | 2 Nov 2010 | | Multi-layered, peelable hygienic cover for a stethoscope |
| USD334196 | 20 Dic 1990 | 23 Mar 1993 | | Telephone handset ear pad |
| USD484123 | 19 Feb 2002 | 23 Dic 2003 | | Ear and mouthpiece barriers for a phone |
