Resources Contact Us Home
Browse by Category: Main > Communications
Class Information
Number: 116/168
Name: Signals and indicators > Bells > Spiral-spring type
Description: Devices in which a spiral metallic spring is used as a sounding element, the type being frequently used in clocks.

Patents under this class:

Patent Number Title Of Patent Date Issued
6087945 Pump failure alarm system for hydraulic working machine Jul. 11, 2000
5631632 Pressure monitoring system May. 20, 1997
4187635 Method and apparatus for sound production Feb. 12, 1980

  Recently Added Patents
Matching a usage history to a new cloud
Turbulence sensor and blade condition sensor system
Identifying a characteristic of an individual utilizing facial recognition and providing a display for the individual
Gas sensor with a porous layer that detectably affects a surface lattice resonant condition of a nanoparticle array
Method for conformal plasma immersed ion implantation assisted by atomic layer deposition
Silicon-on-insulator (SOI) structure configured for reduced harmonics and method of forming the structure
Signal processing apparatus and methods
  Randomly Featured Patents
Printing control system with suspend modes and method thereof
Virtual USB communications port
Heat-sensitive transfer image-receiving sheet
Dicarbamic acid diesters containing phosphorus
Use of kinin antagonists for preparing a pharmaceutical composition for treating bacterial infections
Recording medium for storing start position information for each zone and method and apparatus of managing data using the information
Corrosion-inhibiting pigments, their production and use
System and method of high-speed transmission and appropriate transmission apparatus
Power factor controller
Methods for recording and reproducing information