(under subclass 920) Stock material product in which the product prevents fire or a flame from passing therethrough.
SEE OR SEARCH THIS CLASS, SUBCLASS:
34.1+, for a tube type article of heat insulation not provided for elsewhere.
386, 404+, 432+, 457+, and 539, for other products which include a refractory metal or a compound thereof and which thus possess a fire, heat or flame protection feature.
442, for a laminated stock material product including asbestos which acts to protect against fire or heat.
SEE OR SEARCH CLASS 442, Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, etc.),
141+, for a textile, cloth, or fabric impregnated with a phosphorus containing material which protects against fire or flame.
