RU1769228C
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Training model of electrical machine
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SU1689979A1
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Direct current electrical machine model
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SU1592862A1
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Model of d.c. electric machine
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SU1548809A1
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Training aid on electrical engineering
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SU1557581A1
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Training aid on electrical engineering
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SU1432590A1
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Electrical engineering teaching aid
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SU1410087A1
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Teaching aid in electrical engineering
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SU1257696A1
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Teaching-aid mock-up of electric machine
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SU1292151A1
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D.c.electric drive
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SU1275679A1
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Rectifier electric motor
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SU1166252A1
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Device for de-energizing d.c.motor
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SU1099369A1
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D.c. drive
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SU1023564A1
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Thyratron motor
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SU1003247A1
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Device for power supply of load
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SU1001344A1
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Thyratron electric motor
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SU1010704A1
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Thyratron electric motor
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SU1056417A1
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Multimotor reversible electric drive
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SU978301A1
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Device for dynamic braking of independent excitment dc motor
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SU964855A1
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Dc supply system
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SU944038A1
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Reversible electric drive
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