| 7502855 |
Wireless classroom system allowing user to access a particular classroom by selecting corresponding network from a list of wireless networks |
Mark R. Swanson, William Moss, Dean Goodmanson |
2009-03-10 |
| D566115 |
Wireless base station |
Mark R. Swanson, Christina M. Miller, John W. Grosz |
2008-04-08 |
| D552606 |
Handheld wireless communication device |
Mark R. Swanson, Jason Boon, John W. Grosz |
2007-10-09 |
| D541290 |
Handheld wireless communication device keypad |
Mark R. Swanson, Jason Boon, John W. Grosz |
2007-04-24 |
| 6396170 |
Method and apparatus for coordinating uninterruptible power supply modules to provide scalable, redundant power |
Derek Laufenberg, Joseph R. Wade |
2002-05-28 |
| 6292379 |
Distributed internal fault bypass in a modular uninterruptible power supply |
Craig Edevold, Cary Winch, Donald K. Zahrte, Sr., Joseph R. Wade, Derek Laufenberg |
2001-09-18 |
| 6218744 |
Uninterruptible power supply and ferroresonant transformer for use therewith |
Donald K. Zahrte, Sr. |
2001-04-17 |
| 5790391 |
Standby power system |
Frederick A. Stich, Donald K. Zahrte, Sr. |
1998-08-04 |