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Class Information
Number: 330/271
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including push-pull amplifier > Having signal feedback means
Description: Subject matter wherein a portion of the electrical signal output energy is applied to the input of the amplifier.

Patents under this class:

1 2

Patent Number	Title Of Patent	Date Issued
4041411	Quantized amplifier	Aug. 9, 1977
RE29286	Power amplifier with a bootstrapped driver stage	Jun. 28, 1977
RE29273	Direct-current-coupled transistor power amplifiers	Jun. 21, 1977
4004241	Hybrid feedback amplifier of a push-pull type	Jan. 18, 1977
3986134	Push-pull amplifier circuitry	Oct. 12, 1976