Inventor
RODGERS JAMES M
US3 patents
Patents
3 patentsUS5273151ADec 28, 1993
Resonant coil coin detection apparatus
DUNCAN IND PARKING CONTROL SYS125 citations95
US5244070ASep 14, 1993
Dual coil coin sensing apparatus
DUNCAN IND PARKING CONTROL SYS134 citations95
US5155614AOct 13, 1992
Low-power demodulating receiver with amplifier stages sharing the same bias current
DUNCAN IND PARKING CONTROL SYS102 citations94