Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8558739 | Antenna control system | Mathias Martin Ernest Ehlen | 2013-10-15 |
| 7518552 | Antenna control system | Mathias Martin Ernest Ehlen | 2009-04-14 |
| 6603436 | Antenna control system | Mathias Martin Ernest Ehlen | 2003-08-05 |
| 6600457 | Antenna control system | Mathias Martin Ernest Ehlen | 2003-07-29 |
| 6590546 | Antenna control system | Mathias Martin Ernest Ehlen | 2003-07-08 |
| 6567051 | Antenna control system | Mathias Martin Ernest Ehlen | 2003-05-20 |
| 6538619 | Antenna control system | Mathias Martin Ernest Ehlen | 2003-03-25 |
| 6346924 | Antenna control system | Mathias Martin Ernest Ehlen | 2002-02-12 |
| 6198458 | Antenna control system | Mathias Martin Ernest Ehlen | 2001-03-06 |
| 5801600 | Variable differential phase shifter providing phase variation of two output signals relative to one input signal | Roger John Butland | 1998-09-01 |
| 5691735 | Dipole antenna having coupling tabs | Roger John Butland | 1997-11-25 |
| 5465563 | Lawn mower with rotatable wheels | — | 1995-11-14 |
| 5440318 | Panel antenna having groups of dipoles fed with insertable delay lines for electrical beam tilting and a mechanically tiltable ground plane | Roger John Butland | 1995-08-08 |