Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6923180 | Oxygen conserving device utilizing a radial multi-stage compressor for high-pressure mobile storage | Gerald Goertzen | 2005-08-02 |
| 6889726 | Method and apparatus for filling portable high pressure cylinders with respiratory oxygen | Gerold Goertzen | 2005-05-10 |
| 6805122 | Oxygen conserving device utilizing a radial multi-stage compressor for high-pressure mobile storage | Gerald Goertzen | 2004-10-19 |
| 6794836 | Electric motor drive controller with voltage control circuit operative in different modes | Thomas Strothmann | 2004-09-21 |
| 6615937 | Motorized wheelchairs | Theodore D. Wakefield, II | 2003-09-09 |
| 6302107 | Apparatus and method for forming oxygen-enriched gas and compression thereof for high-pressure mobile storage utilization | Gerold Goertzen | 2001-10-16 |
| 6202773 | Motorized wheelchairs | Theodore D. Wakefield, II | 2001-03-20 |
| 6131651 | Flexible heat transfer device and method | — | 2000-10-17 |
| 5988165 | Apparatus and method for forming oxygen-enriched gas and compression thereof for high-pressure mobile storage utilization | Gerold Goertzen | 1999-11-23 |
| 5794638 | Composite base assembly for cane having fifth leg | Shane Obitts | 1998-08-18 |
| 5366037 | Powered wheelchair having drive motors integrated into driven wheels | — | 1994-11-22 |
| 5094310 | Powered wheelchair having transversely mounted drive mechanism | Theodore D. Wakefield, II, Alan D. Wainscott | 1992-03-10 |
| 4547892 | Cardiac imaging with CT scanner | Robert H. Wake, Ronald G. Walters, Willard F. Hunt, Steven L. Cool | 1985-10-15 |
| 4359759 | Bias lighting in a radiographic apparatus and method | Thomas R. McBride | 1982-11-16 |
| 4304999 | Eccentric source collimator assembly for rotating source CT scanner | John J. Kuwik, Arthur B. Braden, Samuel K. Taylor, John Covic | 1981-12-08 |