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2321798
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Patent Grant
2321798
References
Source
Patent Number
2,321,798
Date Filed
Not available
Date Issued
Tuesday, June 15, 1943
81 years ago
CPC
H02P1/20 - by progressive reduction of resistance in series with armature winding
US Classifications
388 - Electricity: motor control systems
318 - Electricity: motive power systems
335 - Electricity: magnetically operated switches, magnets, and electromagnets
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