Amptrak Trademarks

AMPTRAK
HAND HELD UNIT INVOLVING ON-OFF SWITCH AND POTENTIOMETER FOR MANUAL REMOTE CONTROL OF ELECTRIC WELDING EQUIPMENT
Cancelled  ·  September 28, 1987  ·  73686803  · 
AMPTRAK
WELDING MACHINE AMPERAGE CONTROL PROGRAMMER
Cancelled  ·  July 23, 1987  ·  73673914  · 
AMPTRAK
WELDING MACHINE AMPERAGE CONTROL PROGRAMMER
Cancelled  ·  April 7, 1978  ·  73165457  ·