Inventor
ECHOLS JOHN C
US7 patents
⚠️ This page may combine multiple inventors who share the name “ECHOLS JOHN C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ESSEX ELECTRONICS INC
5 patentsUS5231326AJul 27, 1993
Piezoelectric electronic switch
ESSEX ELECTRONICS INC118 citations95
US5674018AOct 7, 1997
Weatherproof electronic keypad with replaceable graphics overlay
ESSEX ELECTRONICS INC44 citations88
USD724588SMar 17, 2015
Smart card RFID reader
ESSEX ELECTRONICS INC15 citations79
USD738882SSep 15, 2015
Touchless microwave switch
ESSEX ELECTRONICS INC2 citations57
US7063471B2Jun 20, 2006
Access control apparatus
ESSEX ELECTRONICS INC0 citations49