Resources Contact Us Home
Browse by Category: Main > Communications
Class Information
Number: 178/64
Name: Telegraphy > Systems > Coil transformer
Description: Systems for transmitting messages by induced currents having an induction-coil or transformer, usually with its primary in a local circuit, with the transmitter and its secondary in the main line; also includes systems utilizing induction-coils or transformers between sections of the main line.

Patents under this class:

Patent Number Title Of Patent Date Issued

  Recently Added Patents
Resistor and manufacturing method thereof
Newly identified human rhinovirus of HRV-C and methods and kits for detecting HRV-Cs
Agglutination judgment method
3D solid-state arrangement for solid state memory
Door-activated entry light fixture
Input system including position-detecting device
Electric power supply system and electric power supply system for motor vehicle
  Randomly Featured Patents
Multiple access radio system
Air-conditioning system for airplane cabin
Base station device, mobile station device, communication system, and communication method
GPS receiver having DR sensor signal sampling function
Electrophotographic color image producing apparatus
Image capturing device and usage method thereof
Interior rear-view mirror of a motor vehicle having an integrated storage compartment
Apparatus and method for tracking a target
Circuit for driving matrix display panel with photoluminescence quenching devices, and matrix display apparatus incorporating the circuit