Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Communications
Class Information
Number: 178/109
Name: Telegraphy > Keys > Spring pivot
Description: Telegraph keys made of spring metal or connected to their supports by leaf springs functioning as pivots.










Patents under this class:

Patent Number Title Of Patent Date Issued
5773769 Twin lever key with horizontal finger pads for code transmission Jun. 30, 1998











 
 
  Recently Added Patents
Insulin derivative
Ion generation using wetted porous material
Control device with adjusting pulse width modulation function and the backlight module thereof
Newly identified human rhinovirus of HRV-C and methods and kits for detecting HRV-Cs
Antenna arrangement and antenna housing
Automatic actuator for breakers or switches
System and method for configuring a direct lift control system of a vehicle
  Randomly Featured Patents
Flatware sorter
Semiconductor devices and methods for fabricating the same
Apparatus for evaluating a sample including a self-supporting thin film
Orthodontal electrical device and method of employing same
Recycling strip and dispenser for handling empty plastic bottles
Electrically programmable antifuse having stair aperture
Ink jet recording apparatus
Extendable step ladder
System and method for automating the creation of customized multimedia content
Car seat slip sleep and outer wear