| 7640185 |
Dispensing system and method with radio frequency customer identification |
Joseph A. Giordano, Samuel S. Hendricks, Carl R. Jacobs, Thomas L. Mays, Don Charles McCall +14 more |
2009-12-29 |
| 6807400 |
Batteryless transponder |
— |
2004-10-19 |
| 6674359 |
Method of identifying several transponders |
Konstantin Aslanidis, Simon Atherton, Adolf Baumann, Andreas Hagl |
2004-01-06 |
| 6385275 |
Assembly for generating a consecutive count |
Herbert Meier |
2002-05-07 |
| 6239675 |
Tuning circuit having switchable capacitor controlled by a selection circuit |
— |
2001-05-29 |
| 6118189 |
Identification system reader with multiplexed antennas |
— |
2000-09-12 |
| 5798709 |
Wireless transmitter carrier phase synchronization |
— |
1998-08-25 |
| 5729236 |
Identification system reader with multiplexed antennas |
— |
1998-03-17 |
| 5621396 |
Method and apparatus with adaptive transponder plucking |
— |
1997-04-15 |
| 5550536 |
Circuit frequency following technique transponder resonant |
— |
1996-08-27 |
| 5491715 |
Automatic antenna tuning method and circuit |
— |
1996-02-13 |