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
Housekeeping cart
Mobile phone
Combination of a microorganism and a phytosphingosine derivative, composition, methods of use
Context data in UPNP service information
Boring machine
Ink composition, ink for inkjet recording and ink set using the ink
Method for resource allocation in a wireless communication network, method for error-free transmission of information, node and wireless communication network
  Randomly Featured Patents
Pipe obstacle for water sports
Multi-shelf system clock synchronization
Static mixer with a bundle of chambered strings
Absorbent article having cushion layer
Modular magneto-mechanical device
Switching voltage regulator having a charge pump circuit
Apparatus for deforming corrugated fiberboard
Power supply circuit diagram design system
Surface mounted box strike
Casing for a thermal turbomachine having a heat-insulating liner