Top IPC subclasses
1
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B23H
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6
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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
|
2
|
F26B
|
4
|
Drying solid materials or objects by removing liquid therefrom
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3
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B07B
|
3
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separating solids from solids by sieving, screening, or sifting or by using gas currentsother separa
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