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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H01F7/16
Rectilinearly-movable armatures
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H01F7/1607
Armatures entering the winding
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H01F7/1615
Armatures or stationary parts of magnetic circuit having permanent magnet
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