PQVAR by TDK Electronics AG (Track this)
Intl: (009) Electrical and scientific apparatus US: 021; 023; 026; 036; 038 Filing date: 08-Mar-2017 Serial number: 79209087
PQVIEW by ELECTROTEK CONCEPTS, INC. (Track this)
Intl: (009) Electrical and scientific apparatus US: 038 Filing date: 26-Apr-1993 Serial number: 74382103