Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Communications
Class Information
Number: 116/151
Name: Signals and indicators > Bells > Pneumatic actuation
Description: Bells in which pneumatic means are used for moving the bell or controlling its motion.










Patents under this class:

Patent Number Title Of Patent Date Issued
7640883 Fluid-operated communication system Jan. 5, 2010
4275681 System gas alarm Jun. 30, 1981
4269878 Stand structure May. 26, 1981











 
 
  Recently Added Patents
Fast port switching in an audiovisual receiver by use of port pre-authentication by a partial PHY decoder core
Film, polarizing plate and display device, and method of manufacturing film
Projection-type video-image display apparatus
Substantially aligned boron nitride nano-element arrays and methods for their use and preparation
Reconfigurable barrel shifter and rotator
Video reproducing apparatus and video reproducing method
Analyte assaying by means of immunochromatography with lateral migration
  Randomly Featured Patents
Process for preparing 2-methoxyisobutylisonitrile
Aryl substituted tetrazole derivatives, and application thereof in therapeutics
Method of carburizing austenitic metal
Solid antistatic compositions
Liquid compositions comprising hydrophobically modified polyalkylene glycols as mildness actives
Liquid-level gauge driver circuit
Method and apparatus for securing the intermediate time durations in street traffic signal systems
Deagglomeration process
Method of inducing negative chemotaxis
Light emitting display device and drive control method thereof