BLACKSTAR by GRANT PRIDECO, INC. (Track this)
Intl: (009) Electrical and scientific apparatus US: 021; 023; 026; 036; 038 Filing date: 20-Dec-2001 Serial number: 76351887
BLACKSTAR by BAART INDUSTRIAL GROUP LLC (Track this)
Intl: (007) Machinery US: 013; 019; 021; 023; 031; 034; 035 Filing date: 14-Dec-1999 Serial number: 75871889