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2660640
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Information
Patent Grant
2660640
References
Source
Patent Number
2,660,640
Date Filed
Not available
Date Issued
Tuesday, November 24, 1953
70 years ago
CPC
H01H1/065 - formed by freely suspended particles
H01C10/103 - by using means responding to magnetic or electric fields
Y10T307/74 - Switching systems
US Classifications
361 - Electricity: electrical systems and devices
192 - Clutches and power-stop control
307 - Electrical transmission or interconnection systems
323 - Electricity: power supply or regulation systems
335 - Electricity: magnetically operated switches, magnets, and electromagnets
336 - Inductor devices
338 - Electrical resistors
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