U.S. federal trademark · Serial No. 72058237 · Reg. No. 0685801
Electrical Plasma-Flame or Plasma-Jet Apparatus, Specifically Including Plasma-Flame or Plasma-Jet Torches and Power Supplies Therefor, Said Torches Incorporating an Arcing Electrode and Means to Pass Gas Through the Arc Whereby the Gas Is Heated to a High Temperature
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