MICROCON by MERCK KGAA (Track this)
Intl: (009) Electrical and scientific apparatus US: 031 Filing date: 11-Feb-1993 Serial number: 74357977
MICROCON by RGF ENVIRONMENTAL GROUP, INC. (Track this)
Intl: (011) Environmental control apparatus US: 031 Filing date: 07-Jul-1992 Serial number: 74292509
PROCON by PROCON US, INC. (Track this)
Intl: (007) Machinery US: 023 Filing date: 27-Jun-1960 Serial number: 72099783