MICROHEAT by Wolverine Tube, Inc. (Track this)
Intl: (009) Electrical and scientific apparatus US: 021; 023; 026; 036; 038 Filing date: 15-Nov-2001 Serial number: 76338658
WOLVERINE by WOLVERINE TUBE, INC. (Track this)
Intl: (006) Metal goods US: 013 Filing date: 08-Dec-1970 Serial number: 72378157