Top IPC subclasses
1
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G01B
|
8
|
measuring length, thickness, or similar linear dimensionsmeasuring anglesmeasuring areasmeasuring ir
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2
|
F03D
|
2
|
Wind motors
|
3
|
G08B
|
1
|
signalling or calling systemsorder telegraphsalarm systems
|
4
|
G01L
|
1
|
measuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure
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