Issued Patents All Time
Showing 1–25 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11213441 | Suspension for wheeled vehicles | William A. Null, Robert L. Cuson | 2022-01-04 |
| 10512572 | Suspension for wheeled vehicles | William A. Null, Robert L. Cuson | 2019-12-24 |
| 9987177 | Obstacle traversing wheelchair | William A. Null | 2018-06-05 |
| 9925100 | Suspension for wheeled vehicles | William A. Null, Robert L. Cuson | 2018-03-27 |
| 9624918 | Pumping device | William A. Null | 2017-04-18 |
| 9364377 | Suspension for wheeled vehicles | William A. Null, Robert L. Cuson | 2016-06-14 |
| 9149398 | Obstacle traversing wheelchair | William A. Null | 2015-10-06 |
| 8833774 | Suspension for wheeled vehicles | William A. Null, Robert L. Cuson | 2014-09-16 |
| 8636089 | Obstacle traversing wheelchair | William A. Null | 2014-01-28 |
| 8534679 | Suspension for wheeled vehicles | William A. Null, Robert L. Cuson | 2013-09-17 |
| 8172016 | Obstacle traversing wheelchair | William A. Null | 2012-05-08 |
| 8123497 | Apparatus for compressing and storing oxygen enriched gas | Joseph B. Richey, II | 2012-02-28 |
| 8062003 | System and method for providing oxygen | William A. Null | 2011-11-22 |
| 7694990 | Anti-tip wheelchair | Michael Nemcek | 2010-04-13 |
| 7597163 | Obstacle traversing wheelchair | William A. Null | 2009-10-06 |
| 7419182 | Mobility aid | William A. Null, Bradley Kushner | 2008-09-02 |
| 7302716 | Adjustable bed | Steven Snyder, Howard Loewenthal, Andrew R. Spriegel, Robert Puckett, Kevin S. Wysocki | 2007-12-04 |
| 7219755 | Obstacle traversing wheelchair | William A. Null | 2007-05-22 |
| 7178563 | Method and apparatus for filling portable high pressure cylinders with respiratory oxygen | Joseph B. Richey, II | 2007-02-20 |
| 6997082 | Adjustable bed | Steven Snyder, Howard Loewenthal, Andrew R. Spriegel, Robert Puckett, Kevin S. Wysocki | 2006-02-14 |
| 6983495 | Adjustable height bed | Steven Snyder, Howard Loewenthal, Andrew R. Spriegel, Robert Puckett | 2006-01-10 |
| 6935448 | Obstacle traversing wheelchair | William A. Null | 2005-08-30 |
| 6923280 | Obstacle traversing wheelchair | William A. Null | 2005-08-02 |
| 6889726 | Method and apparatus for filling portable high pressure cylinders with respiratory oxygen | Joseph B. Richey, II | 2005-05-10 |
| 6554086 | Obstacle traversing wheelchair | William A. Null | 2003-04-29 |