MEMTEK by EVOQUA WATER TECHNOLOGIES LLC (Track this)
Intl: (011) Environmental control apparatus US: 031 Filing date: 17-Aug-1989 Serial number: 73819758
MEMTRON by MEMTRON TECHNOLOGIES CO. (Track this)
Intl: (009) Electrical and scientific apparatus US: 021 Filing date: 29-Mar-1983 Serial number: 73419283