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2689936
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Information
Patent Grant
2689936
References
Source
Patent Number
2,689,936
Date Filed
Not available
Date Issued
Tuesday, September 21, 1954
70 years ago
CPC
H02P9/24 - due to variation of make-to-break ratio of intermittently-operating contacts
US Classifications
322 - Electricity: single generator systems
218 - High-voltage switches with arc preventing or extinguishing devices
361 - Electricity: electrical systems and devices
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