Valvtron Trademarks

VALVTRON
manually operated metal valves, other than parts of machines, and parts therefor sold together with the valves as a unit
Cancelled  ·  March 23, 1995  ·  74652591  · 
VALVTRON
METAL MANUALLY OPERATED BALL VALVES
Cancelled  ·  April 10, 1985  ·  73531770  ·