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Electronic tachograph
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Keyless unidirectional reset for cumulative demand register
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Split core current transformer having an interleaved joint and hinge structure
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Event data recording apparatus with digitally encoded time and date
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Retrofit demand meter
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Low power recording instrument with two or more tracks
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Locking arrangement for a watthour meter adapter assembly
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Rotary switch
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Demand controller
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Meter reading system
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Remote meter reading system using electric power lines
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Seismic resistant structure for a capacitor bank
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Electrolytic capacitor with improved header and method of making same
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Solid state pulse initiator for demand meter
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Load survey recorder for measuring electrical parameters
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Load survey recorder including tape cartridge receptacle
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Method and apparatus for detecting absolute value amplitude of am suppressed carrier signals
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Electrolytic capacitor having low value inductance and equivalent series resistance
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Damping clutch for indicating meter
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Remote meter reading system using electric power lines
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