Top IPC subclasses
1
|
B01J
|
4
|
Chemical or physical processes, e.g. catalysis, colloid chemistry; their relevant apparatus
|
2
|
A23N
|
4
|
machines or apparatus for treating harvested fruit, vegetables, or flower bulbs in bulk, not otherwi
|
3
|
B02C
|
3
|
crushing, pulverising, or disintegrating in generalmilling grain
|