(under subclass 117) Construction of the outer surface or skin of lighter-than-air craft.
SEE OR SEARCH CLASS
428, Stock Material or Miscellaneous Articles, appropriate subclasses, for a stock material product in the form of a single or plural layer web or sheet, and especially
175+, 190, 193, and 196+ for such a product embodying mechanically interengaged strands or strand-portions.
442, Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, etc.),
