(under the class definition) Device comprising means for producing a thin film of cohesive material inflated with air, wherein the air is sealed within the film solely by said cohesive property.
(1) Note. Device which form bubbles under water are excluded.
SEE OR SEARCH CLASS
40, Card, Picture, or Sign Exhibiting,
408, for a store window type display device having bubble forming means.
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,
10+, for foam colloid systems or agents for such systems or making or stabilizing such systems or agents, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.