Patent classifications
A
HUMAN NECESSITIES
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A62
LIFE-SAVING; FIRE-FIGHTING
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A62D
CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
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3/00
Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
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A62D3/30
by reacting with chemical agents
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A62D3/37
by reduction, e.g. hydrogenation
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