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United States Utility Patents
4,972,290 - 4,972,299

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NumberTitle
4,972,290 Electric power system with remote monitoring and control of protective relays
4,972,291 Surge arrester with improved insulative bracket
4,972,292 Inductor with centertap switching transistor for reduced radio frequency emissions
4,972,293 Coded electromagnetic device and system therefor
4,972,294 Heat sink clip assembly
4,972,295 Electrical junction box
4,972,296 Expandable modular switching unit
4,972,297 Device for shielding assemblies having multi-pole plugs
4,972,298 High density circuit assembly
4,972,299 Chip type capacitor and manufacturing thereof



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