Resources Contact Us Home
Browse by Category: Main > Communications
Class Information
Number: 178/106
Name: Telegraphy > Keys > Shifting contact point
Description: Telegraph keys having one or more of the contacts movable or revoluble, so that the points of contact may be renewed when they are roughened or burned by heavy currents or use.

Patents under this class:

Patent Number Title Of Patent Date Issued

  Recently Added Patents
Subcarrier cluster-based power control in wireless communications
Imaging lens
System and method for providing dynamic navigation through a property to a selected destination
Magnetic reading and writing device
Methods for detecting DNA-binding proteins
Method and apparatus of communication using soft decision
Current collector for lead acid battery
  Randomly Featured Patents
Motorcycle with a holding device for a saddlebag
Semiconductor component and method of manufacture
Hydrogen production from biomass
Compression of structured data
Crop sensing apparatus
Emergency alert system channel assignment
Apparatus and method for controlling wiper and washer
Combined closed loop/open loop power control in a time division duplex communication system
Printer unit for duplex printing
Memory device with column select being variably delayed