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
Adjustable voltage regulator with dynamic voltage compensation
Circuit for and method of enabling communication of cryptographic data
Antenna device
Modular system having expandable form factor
Anti-slip strip for vehicle running boards
System and method for providing advice to consumer regarding a payment transaction
Image processing device and information storage medium including motion vector information calculation
  Randomly Featured Patents
Cleaning apparatus for endoscope
Recreational boat
Process for preparing jointing foam
Method and tool for computer bus fault isolation and recovery design verification
Regenerable adsorbents for purification of cleaning solvents
Trotline reel
Paper separators for electrochemical cells
Load responsive brake control valve
Spindle
Steam turbine