Top IPC subclasses
1
|
H02K
|
18
|
dynamo-electric machines
|
2
|
B23P
|
7
|
other working of metalcombined operationsuniversal machine tools
|
3
|
H02M
|
4
|
apparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use wit
|
4
|
B23K
|
4
|
soldering or unsolderingweldingcladding or plating by soldering or weldingcutting by applying heat l
|
5
|
H01F
|
2
|
magnetsinductancestransformersselection of materials for their magnetic properties
|
6
|
H02G
|
2
|
installation of electric cables or lines, or of combined optical and electric cables or lines
|
7
|
H02J
|
2
|
circuit arrangements or systems for supplying or distributing electric powersystems for storing elec
|
8
|
C22C
|
1
|
alloys
|
9
|
G01M
|
1
|
testing static or dynamic balance of machines or structurestesting structures or apparatus not other
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