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2417710
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Patent Grant
2417710
References
Source
Patent Number
2,417,710
Date Filed
Not available
Date Issued
Tuesday, March 18, 1947
77 years ago
CPC
H02P1/20 - by progressive reduction of resistance in series with armature winding
US Classifications
388 - Electricity: motor control systems
361 - Electricity: electrical systems and devices
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