Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8943871 | Crash test method and apparatus including pitch simulation | Thomas Wittmann, Brian Dick Coughren, Phillip Carl Christiansen | 2015-02-03 |
| 8171591 | Power toothbrush brushhead with fluid-directing member | Scott E. Hall, Kevin A. Miller, Joseph W. Grez | 2012-05-08 |
| 7987544 | Brushhead attachment system for a power toothbrush | Friedrich Stoeffler, Craig Black, Daniel Joseph Greene | 2011-08-02 |
| 7979938 | Changing amplitude of movement by changing the drive frequency of a toothbrush brushhead | Scott E. Hall, John W. Pace, William E. Bryant, Joseph W. Grez | 2011-07-19 |
| 5704824 | Method and apparatus for abrasive water jet millins | Mohamad Hashish, David O. Monserud, Steven J. Craigen, Mark Marvin, Paul H. Tacheron +2 more | 1998-01-06 |
| 4667781 | Electric brake heater | Edgar J. Ruof | 1987-05-26 |