|  | A |
SECTION A — HUMAN NECESSITIES

HEALTH AND AMUSEMENT

|  | A62 |
LIFE-SAVING; FIRE-FIGHTING (ladders Fulltext... Hierarchy... Expanded...E06C)

|  | A62D |
CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS

|  | A62D 1/00 |
Fire-extinguishing compositions; Selection of chemical substances for use in extinguishing fires

|  | A62D 3/00 |
Chemical means for combating harmful chemical agents; Processes for making harmful chemical agents harmless (treatment of sewage or waste water Fulltext... Hierarchy... Expanded...C02C)

|  | A62D 5/00 |
Composition of materials for coverings or clothing affording protection against harmful chemical agents

|  | A62D 7/00 |
Composition of materials for transparent parts of gas-masks, respirators, breathing bags, or helmets

|  | A62D 7/02 |
· | Clear-view sheets which prevent the formation of water drops or ice (compositions for minimising adherence of ice or water to surfaces Fulltext... Hierarchy... Expanded...C09K 3/18)

|  | A62D 9/00 |
Composition of chemical substances for use in breathing apparatus (production of oxygen-generating compounds in general, processes for the production of oxygen from chemicals in general C 01 B 13/04, Fulltext... Hierarchy... Expanded...C25B 1/02)