Top IPC subclasses
1
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A62D
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3
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chemical means for extinguishing firesprocesses for making harmful chemical substances harmless, or
|
2
|
C10J
|
2
|
production of producer gas, water-gas, synthesis gas from solid carbonaceous material, or mixtures c
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3
|
F23G
|
1
|
Cremation furnaces; consuming waste or low grade fuels by combustion
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