Top IPC subclasses
1
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F26B
|
4
|
Drying solid materials or objects by removing liquid therefrom
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2
|
B07B
|
3
|
separating solids from solids by sieving, screening, or sifting or by using gas currentsother separa
|
3
|
B23H
|
3
|
Working of metal by the action of a high concentration of electric current on a workpiece using an electrode which takes the place of a tool; such working combined with other forms of working of metal
|
4
|
B02C
|
1
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crushing, pulverising, or disintegrating in generalmilling grain
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