Top IPC subclasses
1
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F25D
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11
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refrigeratorscold roomsice-boxescooling or freezing apparatus not covered by any other subclass
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2
|
A23C
|
1
|
dairy products, e.g. milk, butter, cheesemilk or cheese substitutesmaking thereof
|
3
|
F28D
|
1
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heat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do n
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