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Class Information
Number: 330/113
Name: Amplifiers > Polyphase power supply (i.e., for an electrode, cathode heater, or filament)
Description: Subject matter including a polyphase power supply for the energizing or bias voltage supply applied to any electrode or for a filament or for any heater for a cathode electrode.

Patents under this class:

Patent Number Title Of Patent Date Issued
7193458 Power supply for guitar amplifier Mar. 20, 2007

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