Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7381357 | Apparatus and method for co-extruding multi color plastics | — | 2008-06-03 |
| 6932591 | Apparatus and method for co-extruding multi color plastics | — | 2005-08-23 |
| 6863967 | Coextruded multi color plastic sheets | — | 2005-03-08 |
| 6063169 | Control means for molecular sieve on-board oxygen generator | Donald P. Muhs, deceased | 2000-05-16 |
| 5787883 | Spring-free pressure regulator with structure isolating exhaled air from valve | — | 1998-08-04 |
| 5766310 | Single stage secondary high purity oxygen concentrator | — | 1998-06-16 |
| 4335735 | Automatic diluter/demand oxygen regulator adapted for chemical or biological use | Roy Henneberger | 1982-06-22 |
| 4195817 | Oxygen regulator | — | 1980-04-01 |
| 4187912 | Method and apparatus for pumping fluids from bore holes | — | 1980-02-12 |