|
| US4010748 | 26 Jun 1975 | 8 Mar 1977 | Dragerwerk Aktiengesellschaft | Breathing air humidifier for respiration devices |
| US4911181 | 21 Jul 1988 | 27 Mar 1990 | Inventor's Funding Company, Ltd. | Plastic mouthpiece for simulated smoking |
| US5353813 | 19 Ago 1992 | 11 Oct 1994 | Philip Morris Incorporated | Reinforced carbon heater with discrete heating zones |
| US6240918 | 20 Feb 1997 | 5 Jun 2001 | Schering Corporation | Powdered medication inhaler |