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Class Information
Number: 330/115
Name: Amplifiers > Unrectified a.c. power supply for an electrode (i.e., not the heater) > Applied to filamentary cathode
Description: Subject matter wherein the electrode, to which the A.C. power supply voltage is applied, is a filamentary directly heated cathode.










Patents under this class:

Patent Number Title Of Patent Date Issued











 
 
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