Subject matter involving inhalation of a breathing gas such as oxygen containing gas and supplements thereto.
SEE OR SEARCH CLASS
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,
1+, for continuous gas or vapor phase colloid system (e.g., smoke, fog, aerosol, cloud, mist) 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.
