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Class Information
Number: 330/193
Name: Amplifiers > Output networks > From cathode
Description: Subject matter, wherein the output signal is coupled from the cathode electrode of a vacuum tube amplifying device.

Sub-classes under this class:

Class Number Class Name Patents
330/194 D.c. coupled 0

Patents under this class:

Patent Number Title Of Patent Date Issued
7583141 Output circuit of vacuum-tube amplifier Sep. 1, 2009
7583140 Output circuit of vacuum-tube amplifier Sep. 1, 2009

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