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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H01F7/06
Electromagnets; Actuators including electromagnets
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H01F7/121
Guiding or setting position of armatures, e.g. retaining armatures in their end position
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H01F7/123
by ancillary coil
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