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Patent classifications
H
ELECTRICITY
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H01
ELECTRIC ELEMENTS
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H01F
MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
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38/00
Adaptations of transformers or inductances for specific applications or functions
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H01F38/20
Instruments transformers
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H01F38/22
for single phase AC
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H01F38/28
Current transformers
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