Resources Contact Us Home
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
Method of making a CIG target by spray forming
Far field telemetry operations between an external device and an implantable medical device during recharge of the implantable medical device via a proximity coupling
Per-request control of DNS behavior
Information processing device and display control method
Lubricating oil compositions
Post-processing device and image forming system
Universal tablet and smartphone holder
  Randomly Featured Patents
Conically shaped phaco tip
Composition for the hair, containing at least one cationic polymer, one anionic polymer, one sugar and one salt
Differential and continuous separation process with controlled paramenters for solids and liquids
Methods of screening for risk of cancer using human lactoferrin DNA probe or primer
Circuit for controlling the speed of a motor
Television signal and FM broadcast signal demodulator and television signal and FM broadcast signal receiver
Direct central nervous system catheter and temperature control system
Method of shortening a rising time of each injection-molding operation in association with controlling of injection-molding speed
Endoscope with acutely angled handle and associated focus adjustment mechanism
Cementless endoprosthesis