Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7566044 | Coupling | Karl Bowser, Raymond C. Hoffman | 2009-07-28 |
| 7550031 | Cylinder filling oxygen concentrator | Donald W. Hunter, Karl Bowser | 2009-06-23 |
| 7445663 | Energy efficient oxygen concentrator | Donald W. Hunter | 2008-11-04 |
| 6393802 | Cylinder filler for use with an oxygen concentrator | Karl Bowser, Greg Clites, Jesse C. Moore | 2002-05-28 |
| 5247826 | Gas concentration and/or flow sensor | Dennis A. Gibboney, Paul A. Bauer, Jr. | 1993-09-28 |
| 5124659 | Measurement of pH and specific ion concentration | John T. Schneider | 1992-06-23 |
| 4912417 | Measurement of pH and specific ion concentration | Dennis A. Gibboney, Dominick Frollini, Jr., John T. Schneider | 1990-03-27 |