72058237
Sep 2, 1958
Sep 29, 1959
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
Housewares and Glass