| Number | Name | Date | Kind |
|---|---|---|---|
| D. 195070 | Lecocq | Apr 1963 | |
| 4944292 | Gaeke et al. | Jul 1990 | |
| 5881725 | Hoffman et al. | Mar 1999 | |
| 6116242 | Frye et al. | Sep 2000 |
| Entry |
|---|
| Brochure entitled “Health Care Products”, Victor Equipment Company (1993). |
| Brochure entitled “Ultra OxyLite-40 Portable Oxygen System”, Chad Therapeutics, Inc. (1994). |