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
Electronic apparatus and manufacturing method of electronic apparatus
Method of using N-thio compounds for oligonucleotide synthesis
Cancer treatment kits comprising therapeutic antibody conjugates that bind to aminophospholipids
Global alignment for high-dynamic range image generation
Rechargeable battery
Electrical converter with variable capacitor
Multi-dimensional tuple support in rule engines
  Randomly Featured Patents
Optical media having graphene wear protection layers
Data transmitting apparatus, data recording apparatus, data transmitting method, and data recording method
Illuminated sign with lamp masks for uniform illumination
Recordable optical disk including an auxiliary information presence indicator
Polyhydroxy compounds containing urethane aryl sulfonic acid hydroxyalkyl ester groups
Product suite licensing method
Method and system for providing low density parity check (LDPC) coding for scrambled coded multiple access (SCMA)
Die changer truck for use with tire vulcanizer
Heat dissipating apparatus having micro-structure layer and method of fabricating the same
Generic IDE interface support for scripting