Resources Contact Us Home
Browse by Category: Main > Electrical & Energy
Class Information
Number: 330/49
Name: Amplifiers > With vacuum tube having distributed parameter impedance characteristics
Description: Subject matter wherein the amplifying device is of the vacuum tube type and includes within the vacuum tube an electrode or other element having distributed parameter impedance characteristics.

Patents under this class:

Patent Number Title Of Patent Date Issued
8335326 Communication method for vacuum tube replacement devices Dec. 18, 2012
7482863 Expanded performance and functions for vacuum tube replacement devices Jan. 27, 2009
7408401 Vacuum tube replacement device, circuit and system Aug. 5, 2008
7355475 Output circuit of vacuum-tube amplifier Apr. 8, 2008
6895096 Microchannel plate audio amplifier May. 17, 2005
4967162 Stripline traveling wave device and method Oct. 30, 1990
4119921 Amplifier device for transmitting tetrode Oct. 10, 1978
3950710 Wide band, in-line, microwave amplifier Apr. 13, 1976

  Recently Added Patents
Detachably integrated battery charger for mobile cell phones and like devices
Method and device for peer arrangement in single substream upload P2P overlay networks
Method for transmitting a signal from a transmitter to a receiver in a power line communication network, transmitter, receiver, power line communication modem and power line communication syst
Mask blank, transfer mask, and film denseness evaluation method
Electron-beam lithography method with correction of line ends by insertion of contrast patterns
Control apparatus and control method
Semiconductor device, integrated circuit and method of manufacturing an integrated circuit
  Randomly Featured Patents
Floating plate holder installation tool
Irrigation pipe control system
Recovery of hydrocarbons from acid sludge
Thermoelectrically powered wrist watch
Inline inspection of photovoltaics for electrical defects
Storage module for tapes
Pick resistant sash lock and keeper and method of locking sashes
Circuit breaker trip solenoid assembly
Liquid crystal display and electronic appliance
Methods and connections for coupled pipe