Resources Contact Us Home
Browse by Category: Main > Communications
Class Information
Number: 181/183
Name: Acoustics > Sound-modifying means > Intensifying horn > With resonant chamber > Double wall
Description: Subject matter wherein the resonant chamber lies between at least part of a side of the horn and a second structure substantially parallel to that part of the horn.

Patents under this class:

Patent Number Title Of Patent Date Issued
7813770 Speaker module design Oct. 12, 2010
6986260 Electrical fan system for vehicle Jan. 17, 2006
6836239 Method and system for displaying text on a radial display Dec. 28, 2004
6001132 Preparation of aqueous solutions suitable for finishing cellulose containing textile materials Dec. 14, 1999

  Recently Added Patents
Treatment of influenza
Packet transmission method, apparatus, and network system
Rotation angle detecting device
Fringe field switching mode liquid crystal display panel
System for the secure management of digitally controlled locks, operating by means of crypto acoustic credentials
Treatment of cancer using the sodium salt of a benzoic acid derivative
  Randomly Featured Patents
System and method for archive verification
Hardenable fluorinated copolymer, the process for making the same, and its application in paints and varnishes
Compiled structure for efficient operation of distributed hypertext
Apparatus and method for generating robust ATSC 8-VSB bit streams
Automotive vehicle drive train
Virtual ground single transistor memory cell, memory array incorporating same, and method of operation thereof
Enzymes derived from thermophilic organisms that function as a chromosomal replicase, preparation and use thereof
Drywall repair tool and method
Complaint platform with parasite mooring through auxiliary vessel
Rock simulating pest trap