Top IPC subclasses
1
|
F26B
|
9
|
Drying solid materials or objects by removing liquid therefrom
|
2
|
B07B
|
9
|
separating solids from solids by sieving, screening, or sifting or by using gas currentsother separa
|
3
|
F16J
|
2
|
pistonscylinderspressure vessels in generalsealings
|
4
|
B02C
|
2
|
crushing, pulverising, or disintegrating in generalmilling grain
|
5
|
F04B
|
1
|
positive-displacement machines for liquidspumps
|
6
|
F16D
|
1
|
couplings for transmitting rotationclutchesbrakes
|