Helgeson; Michael A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Helgeson; Michael A..The latest application filed is for "state validation using bi-directional wireless link".
- Helgeson; Michael A. - Eagan MN
| Patent | Date |
|---|---|
| State validation using bi-directional wireless link Grant 7,446,647 - Helgeson November 4, 2 | 2008-11-04 |
| State Validation Using Bi-directional Wireless Link App 20060152335 - Helgeson; Michael A. | 2006-07-13 |
| State validation using bi-directional wireless link Grant 7,015,789 - Helgeson March 21, 2 | 2006-03-21 |
| Handheld computer apparatus Grant 6,911,969 - Nelson , et al. June 28, 2 | 2005-06-28 |
| Wireless control network with scheduled time slots Grant 6,901,066 - Helgeson May 31, 2 | 2005-05-31 |
| Wireless system with variable learned-in transmit power Grant 6,727,816 - Helgeson April 27, 2 | 2004-04-27 |
| Differential filter with gyrator Grant 6,184,747 - Helgeson , et al. February 6, 2 | 2001-02-06 |
| Partitioned display apparatus Grant 5,530,457 - Helgeson June 25, 1 | 1996-06-25 |
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