Resources Contact Us Home
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
Systems and methods for tracking power modulation
Forming agent for gate insulating film of thin film transistor
Monitoring apparatus for monitoring communication configurations of client devices
Method for facilitating assessment of a coursework answer and moderating the assessment
Method of manufacturing semiconductor devices using ion implantation
Drugs for prophylaxis or mitigation of taxane-induced neurotoxicity
Systems and methods for generating a hybrid text string from two or more text strings generated by multiple automated speech recognition systems
  Randomly Featured Patents
Antistatic white polyester film
Binder assemblies
Rotatable connection system for crane boom sections
Universal filter frame
Integrated cooling system
Car lifting platform
Continuous flow air blender for dry granular materials
Pollution pad reconditioning/recycling system
Key input device
Current mirror circuit and current source circuit