Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7877073 | Superheterodyne receiver having at least one downconversion stage empolying a single image reject filter stage and both low-side injection and high-side injection of a local oscillator signal | Martin R. Johnson | 2011-01-25 |
| D564502 | Radio modem with circuit board | Martin R. Johnson, Hugh Nielsen, Jeremy Paul Willden | 2008-03-18 |
| D530317 | Radio modem having a chamfered sheet metal shield | Martin R. Johnson, Hugh Nielsen | 2006-10-17 |
| 7103086 | Frequency hopping data radio | Hugh Nielsen | 2006-09-05 |