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
Power control arrangement for long term evolution time division duplex method and apparatus
Automatic population of feature capabilities on a communication device
Semiconductor device and manufacturing method thereof
Potential separation for filling level radar
Lens barrel and imaging device
Polypeptides having beta-glucosidase activity and beta-xylosidase activity and polynucleotides encoding same
Catalysts for polyurethane coating compounds
  Randomly Featured Patents
Method of making imbalanced compensated drill bit
Method of separating blood platelets
Multilayer panel
Plunger and housing assembly
M60 semi-automatic conversion
Electrical connector
Guitar peghead
Ladder bracket
Metal-radionuclide-labeled proteins and glycoproteins for diagnosis and therapy
Venting apparatus for a tire vulcanizing mold