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Class Information
Number: 330/111
Name: Amplifiers > Signal feedback > To or from an auxiliary grid or to the anode
Description: Subject matter wherein the amplifying device or devices involved are of the vacuum tube type and wherein the signal feedback is derived from an electrode thereof other than the anode or cathode and/or is applied to an electrode thereof other than the cathode or control grid.

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Patent Number Title Of Patent Date Issued

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