(under subclass 243) Apparatus having means for creating a gas including generating formaldehyde from a polymer thereof (e.g., paraformaldehyde, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
120+, for apparatus for generating life-sustaining gas.
129+, for apparatus for generating gas using chemical reaction.
SEE OR SEARCH CLASS
48, Gas: Heating and Illuminating, for apparatus and
processes of generating heating or illuminating gas.
99, Foods and Beverages: Apparatus, 276, for generating gas in a beverage by fermentation.
102, Ammunition and Explosives; e.g.,
334, 363, 364+, 367+, and 530+ for gas-generating ammunition and explosives.
122, Liquid Heaters and Vaporizers, for steam generator, per se.
261, Gas and Liquid Contact Apparatus, for apparatus involving carbonation when special arrangements for gas and liquid contact are claimed.
435, Chemistry: Molecular Biology and Microbiology,
283.1+, for apparatus that includes means for generating gases by fermentation, particularly subclass 300.1 with means for trapping off-gases.
