|
| US4373528 | 18 Mar 1981 | 15 Feb 1983 | | Suction bottle for sucking out secretions from wound cavities |
| US4854574 | 15 Mar 1988 | 8 Aug 1989 | 501 Healthscan, Inc. | Inspirator muscle trainer |
| US4944306 | 11 Oct 1989 | 31 Jul 1990 | Healthscan, Inc. | Spirometer for pulmonary measurement |
| US5154167 | 16 Apr 1990 | 13 Oct 1992 | | Lung and chest exerciser and developer |
| US5658221 | 7 Jun 1995 | 19 Aug 1997 | | Portable personal breathing apparatus and method of using same |
| US5782837 | 23 Apr 1997 | 21 Jul 1998 | | Esophagus clearing device |
| US5890998 | 30 Jan 1998 | 6 Apr 1999 | | Portable personal breathing apparatus |
| US5899832 | 13 Jun 1997 | 4 May 1999 | | Compact lung exercising device |
| US5910071 | 18 Aug 1997 | 8 Jun 1999 | | Portable, personal breathing apparatus |
| US6083141 | 26 Nov 1997 | 4 Jul 2000 | | Portable respiratory exercise apparatus and method for using the same |
| USD306837 | 20 Apr 1987 | 27 Mar 1990 | | Breath operated novelty |
| USD315583 | 15 Mar 1988 | 19 Mar 1991 | Healthscan, Inc. | Inspiratory muscle exerciser or similar article |
| USD332063 | 22 Jul 1991 | 29 Dec 1992 | Healthscan Products, Inc. | Portable peak flow meter |
