Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7825615 | Intelligent motorized appliances with multiple power sources | Yung Chen | 2010-11-02 |
| 7692908 | Protection of polarity-sensitive components connected in parallel with a direct current motor or inductor | Harry Chen | 2010-04-06 |
| D561880 | Handheld fan | Lee Radtke, Mary G. James, Yung Chen | 2008-02-12 |
| D548454 | Keychain spray misting fan | Lee Radtke | 2007-08-14 |
| D529167 | Twin UV AC fan | Lee Radtke, Yung Chen, Linda M. Usher | 2006-09-26 |
| D507642 | Sport mini mister fan | Lee Radtke | 2005-07-19 |
| D507047 | Bean bag fan | Lee Radtke | 2005-07-05 |
| D482064 | Combination pen and fan | Greg Steiner, Greg Holderfield | 2003-11-11 |
| 5843344 | Portable fan and combination fan and spray misting device | Lee Radtke, Linda M. Usher | 1998-12-01 |